Synonyms

Here, pester is the correct synonym as it implies to annoy constantly and repeatedly for something. 

Here, creditable is the correct synonym as it implies something deserving some credit or praise.

Option (2) is correct.

Option (3) is correct.

It means an introductory proposal or offer.  

Option (2) is correct.

Option (3) is correct.

Assume in some contexts means to take on a certain role such as an actor assumes a role; therefore assume is the word that is most closely related to pretend.

To provoke is to stir up, rouse, or stimulate someone to action or feeling. 'Roused' is the closest synonym as it captures the sense of being awakened or stirred. 'Pleased' is the opposite, 'encouraged' is positive, and 'persuaded' involves convincing rather than stirring.

A rebate is a return of part of a payment, essentially a discount or refund. 'Discount' is the correct synonym. 'Interest' and 'bond' are financial terms but unrelated to rebates. 'Capital' refers to funds or assets, not a reduction in price.

Quack means fraudulent, fake, or pretending to have skills one doesn't possess (like a 'quack doctor'). 'Phoney' captures this meaning of being fake or counterfeit. 'Sophisticated' and 'fashionable' are opposites, while 'obedient' is unrelated.

Reluctant means unwilling or hesitant about doing something. 'Unwilling' is the direct synonym. 'Willing' is the opposite, while 'satisfied' and 'frightened' are different emotional states unrelated to reluctance.

Revenge means the act of punishing someone in return for a perceived wrong. 'Vengeance' is a direct synonym meaning essentially the same thing. 'Justice' is a different concept (fairness), 'forgiveness' is the opposite, and 'forbid' is unrelated.

Scrupulous means thorough, careful, and having moral principles - paying attention to details. 'Careful' captures this meaning of being thorough and attentive. 'Hesitant' and 'rash' are opposites (hasty vs. uncertain), while 'reckless' means careless, the opposite of scrupulous.

Status refers to a person's position, rank, or standing in society or an organization. 'Position' is the closest synonym among the options. 'Right' refers to entitlements, 'law' to legal rules, and 'condition' to state of being - all related but not direct synonyms.