Select the most appropriate collocating word to fill in the blank.
After having understood the ill effects, he said he would ___________ drinking alcohol.

Correct option is A

The most appropriate collocating word to fill in the blank would be option (a) quit, as it fits the context of the sentence and is a common collocation with "drinking alcohol."
• Quit- to stop doing something, especially something that is habit-forming or addictive.
• In the context of the sentence, it makes sense to use this option as the person has decided to stop drinking alcohol.
Meaning of the other given words:
• Finish: to complete something, to come to the end of something.
• Close: to shut or fasten something, to bring something to an end or conclusion.
• Terminate: to bring something to an end, to stop something.