Spotting Errors

Association is 'with' something. So, correct phrase should be 'associated with...'.

The sentence contains a grammatical error with redundant causality. 'Since' already establishes a cause-effect relationship, making 'therefore' unnecessary and incorrect. The correct structure would be either 'Since rats are destructive and may carry disease, many cities try to exterminate them' or 'Rats are destructive and may carry disease; therefore many cities try to exterminate them.'

'A yawn', as the indefinite article 'a' is required here to refer to a non-particular yawn.

The sentence is grammatically correct. 'Even with vast research' properly introduces a concession, 'there is still' correctly states the ongoing situation, and the remaining clauses maintain proper subject-verb agreement and logical flow. All underlined parts are used appropriately.

The error is in part (D) where 'occurs' should be 'occur'. The subject is compound ('both high temperature and abundant rainfall'), which is plural and requires the plural verb form 'occur' instead of the singular 'occurs'. This is a subject-verb agreement error.

With pressure, 'low' is used not 'small'.

It should be "to be harvested" in place of  "for harvesting". "To harvest" is an action done onto the crops and is not done by the crops.

The error is in part (B) where 'seem' should be 'seems'. The subject is 'a camera's image' (singular), which requires the singular verb 'seems' rather than the plural 'seem'. This is a straightforward subject-verb agreement error.

The correct phrase should be 'in a wide range...'.

Error of parallelism. After 'or' we have 'for' in all 'or' phrases, except the last one. So, to maintain parallelism, the last phrase should be 'or for a stringed instrument'.

There is no condition in the sentence but a choice between two options is there. So, instead of 'if' we will use 'whether'.

One is 'slow at activities'. The preposition 'at' follows the adjective 'slow'. If we change 'calculations' to 'calculating' we require an object, e.g. calculating numbers.

We use 'neither' with two things. Moreover 'neither' is followed by a singular verb (belongs). Replacing 'any' with 'neither' corrects the sentence.

 Error of parallelism. Correct phrase is 'not having any meals at all'.

Correct phrase should be 'to shoot with'. You shoot with a gun, you do not shoot a gun. If we donot use 'with' the meaning that is derives is that the gun needs to be shot.