Topic: Conjunction,

Best Answer Explained in Below-:

In the sentence "You may accept the job on offer ---- you may wait for a better job," the word that best fits the blank must logically connect two contrasting options. The options provided suggest different relationships between accepting the job and the possibility of waiting for a better one.

Option A "till" and Option B "until" imply a time-related condition, suggesting that one action can only occur after another. This does not accurately represent the contrast between the two choices, as the speaker is not indicating a sequence of events but rather two simultaneous decisions that can be made independently.

Option D "but" introduces a contrast; however, it does not convey the choice between two separate alternatives as clearly as "or" does. The use of "or" in Option C effectively indicates that the speaker is presenting two mutually exclusive options—either accept the current job or wait for a potentially better opportunity. This use of "or" perfectly captures the essence of making a choice, making it the correct answer for the sentence.