English

Option A correctly completes the sentence with proper grammar and meaning: 'My father was so poor that he could not buy us food.' The other options are grammatically incorrect or nonsensical.

The idiom "Kick the bucket" is a common English phrase that means "to die." It is a euphemistic way of referring to death, not to killing or achieving goals.

The phrase 'whiff of' means a slight or faint sign or indication of something. In this context, it suggests a small indication of consensus during the talks.

The idiom "a hard nut to crack" means a difficult problem or a challenging situation that is not easy to solve or understand.

Gloss refers to a shiny or lustrous surface, which is best described by the term 'brightness' among the given options.

The word 'rhubarb' can mean a noisy quarrel or dispute, so its antonym would be a state of calm or peace, which is best represented by 'Serenity'. 'Harmony' is related but less directly opposite to 'rhubarb' in the sense of a quarrel. Therefore, 'Serenity' is the most accurate antonym here.

The phrase 'cry over spilt milk' means to be upset or complain about something that has already happened and cannot be changed, which corresponds to option B.

The idiom "a blind alley" refers to a situation or course of action that leads nowhere or has no solution or escape, matching option D. It is often used metaphorically to describe a difficult situation with no way out.

The word 'bluster' means to speak loudly or aggressively, often with empty threats or boastfulness. Its antonym is 'meekness,' which means quietness, submissiveness, or lack of aggression, making option D correct.

The word 'Profusion' means an abundance or large quantity of something. Its antonym is 'Scarcity,' which means a lack or insufficient quantity. Therefore, option A is correct.