Fill in the blank with the correct option given below to complete the sentence:
She must abide _____ my decision.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → by
Abide by means to accept and obey a rule, decision or agreement. In this sense the verb abide always takes the preposition by: she has to accept and follow the speaker's decision.
Complete sentence: She must abide by my decision.
Example: All players must abide by the rules of the game.
Why the Other Options are Incorrect?
Option 1: with — Incorrect. Abide with is an old use meaning to stay or live with someone; it does not mean to accept a decision.
Example: The old hymn begins with the words "Abide with me".
Option 3: at — Incorrect. At marks a point of place or time; abide does not take at in the sense of accepting something.
Example: We met at the station.
Option 4: on — Incorrect. On is used for a surface or a topic (agree on, insist on); abide does not take on.
Example: They finally agreed on a date for the meeting.
Contrast: "abide by" a decision means to accept and obey it; "abide with" someone is an old use meaning to stay with that person.