Choose the sentence that correctly uses the apostrophe for joint ownership:

Answer and explanation

Correct answer: A. Tariq and Omar's research project won first prize at the national science symposium.

  1. Step 1: In English possessive conventions, when two or more entities jointly own a single item, only the final noun takes the apostrophe-s.
  2. Step 2: Tariq and Omar jointly own one single 'research project'; therefore, only Omar takes ''s'.
Answer
Tariq and Omar's research project won first prize at the national science symposium.
Why not the others: 'Tariq's and Omar's' implies two separate distinct projects; the other two choices feature incorrect punctuation.

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