One Word Substitution

Disseminate means to spread or scatter information or things widely. Congregate, throng, and muster all mean gathering or assembling - the opposite of scattering.

Obtuse means not sharp or pointed, or blunt in form. Acuminate, spiked, and briery all suggest sharpness or points - the opposite of what's asked.

Desultory means lacking a plan, purpose, or consistency - jumping from one thing to another without clear connection. Precise means exact (opposite), submissive means yielding to authority, and steward is a person, not an adjective.

Option (4) 'actions' is correct partially because what we need here is a specific term which can denote the affected or artificial manner of person. Option (1) is incorrect because though it is used to refer, behaving in dramatic manner but it is used in context of actors and plays. Option (2) 'Dramatics' is term commonly used to refer plays performed and produced by amateurs and also for dramatic effect. It can thereby be kept on hold. Option (3), histrionics, is specifically used to refer artificial or affected manner, and is most suited as answer in the present case, this marks it as correct answer.

Deviate is to turn aside to only a slight degree, Ramble is to talk aimlessly without connection of ideas, Swerve is to turn aside sharply or suddenly and equivocate is to mislead. It is clear from sentence that speaker was talking off subject and boring out his audience, so, best suited term from those given above is rambled as the speaker is just speaking aimlessly without connecting to his subject only to prolong his speech.  

Endemic is used to term a disease under control, while this sentence is talking about an epidemic out of control of authorities. Epidemic is a noun and can be used to replace cholera and not the given expression of sentence. Spreading fits the sentence correctly, so keep it for final consideration. Word rampant means spreading, unchecked and widespread, you can see clearly that it perfectly replace the given expression. Therefore, option (4) is correct answer.

The meaning of expression 'unbearably conceited' is an attitude having exaggerated opinion of oneself, which cannot be tolerated. So this expression has to be replaced by terms given. Lets analyze various options: (1) indecent, is incorrect because it means something morally offensive, this is not something conceited. (2), impatient is lack of patience but this can't be termed as something conceited. Some reasoning applies to option (4). Only option (3) insufferable seems a valid answer here because it means not sufferable or intolerable which can easily fit in the sentence giving same meaning as before substitution.

It means 'order or instruct (someone) to come to one; summon.'

Amenities refers to useful features, facilities, or conveniences that provide comfort, pleasure, or make life easier. This can include things like comfortable seating, air conditioning, recreational facilities, or other services. 'Facilities' best captures this meaning of useful resources and conveniences. Pageantries are elaborate displays, privileges are special rights, and courtesies are polite behaviors - none of which match the meaning of amenities.

When we commemorate something, we remember it. Hence, remember is correct.

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The Act didn't legally require consultation with the central bank on mergers. 'Mandate' means an official order or requirement from an authority. Option B (Decree) is correct - a mandate is like a decree that formally requires or authorizes something to be done.

Prognosis means a forecast or prediction, especially about the likely course of a disease or medical condition. 'Forecast' captures this predictive meaning. 'Indemnification' is compensation, 'preface' is an introduction, and 'scheme' is a plan.

Restitute means to restore, repay, or make restitution for something lost or damaged. 'Repair' captures this restorative meaning - to fix or restore to good condition. 'Help' is too general, 'revenge' is about retaliation, and 'average' is a statistical term.

Crypt = hide/code Other words: encrypt, decrypt, cryptography