My _______ vacation plans had to be postponed due to unexpected circumstances.

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Which choice completes the text so that it conforms to the conventions of Standard English?

A

father-in-laws'

B

father-in-law's

C

father's-in-law

D

fathers-in-law's

Correct Answer: B

Choice B is the best answer. This question tests apostrophe placement with compound nouns.

  1. Context clues: One father-in-law possesses the vacation plans.
  2. Meaning: For compound nouns, add the possessive to the last word.
  3. Verify: "My father-in-law's vacation plans" correctly shows singular possession of the compound noun.

💡 Strategy: Add 's to the END of compound nouns for possession (father-in-law's, not father's-in-law).

Choice A is incorrect because "father-in-laws'" implies plural possession. Choice C is incorrect because the apostrophe is placed on the wrong word. Choice D is incorrect because "fathers-in-law's" is for plural compound possession.