Option(A) is the correct answer.
EXPLANATION:-
There are two types of articles:
DEFINITE ARTICLE (THE) : Article 'the' is used to refer to a DEFINITE thing or person.
INDEFINITE ARTICLE(A/AN): Article 'a/an' is used to refer to a thing or person in general. For instance: man, door etc.
Article 'a' is used with consonant sounds whereas article 'an' is used with vowel sounds.
In the first blank, article "a" will be used as a *man* is a general term.
In the second blank, article "the" will be used because it is the same bar, they are referring to something specific.
Similarly, In the third blank, article "the" will be used because (same time) something specific has been mentioned.
In the fourth blank, no article or zero article will be used as it is DEFINITE that there are two glasses of soda. And no article is used before noun+number.