GMAT SC 3 - Pronoun Ambiguity - Reference; Comparison Error

Question

Thieves steal Hondas and Toyotas from the 1990s more than other models because they can chop them up and sell them for parts that are worth more than the car.
  1. more than other models because they can chop them up and sell them for parts that are worth more than the car
  2. more than they steal other models because they can chop them up and sell them for parts that are worth more than the car
  3. more than they do other models because they can dismantle the cars and sell the parts that are worth more than the car
  4. more than other models because they can chop the cars up and sell them for parts that are worth more than the car
  5. more than other models because they can dismantle them up and sell them for parts that are worth more than the car
Correct Answer : Choice C
 
Explanation
  1. Comparison error. Requires more than they steal… to complete the comparison. Also the pronoun them is ambiguous. It can refer to Hondas, Toyotas, or other models.
  2. Takes care of comparison error, but the pronoun error still stands.
  3. Correct. Dummy verb do takes care of comparison error. Pronoun error stands corrected. Also, the phrase dismantle the cars is better than chop the cars
  4. While pronoun ambiguity is corrected, comparison is incomplete.
  5. Comparison is incomplete. Pronoun them is ambiguous. Dismantle up is incorrect.

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