Free GMAT Practice Questions

Question 1 of 1
ID: GMAT-CR-5
Section: Verbal Reasoning - Critical Reasoning
Topic: Strengthen the Argument
Difficulty level: Hard

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The consumer choice between electric and manual toothbrushes does not depend on the price of these toothbrushes. The share of electric toothbrushes in the total number of toothbrushes sold by a supermarket chain in May remained 20 percent – the same as the average share in the previous months – despite the supermarket chain having offered a discount of 50 percent on electric toothbrushes that month.

Which one of the following, if true, most strengthens the argument?

AAcross all retail outlets, the demand for electric toothbrushes has remained stable for a decade at about 10 percent of the total annual demand for toothbrushes.
BThe share of manual toothbrushes in the total number of toothbrushes sold by the supermarket chain remained 80 percent in a month during which a discount of 50 percent was offered on these toothbrushes.
CThe share of electric toothbrushes in the total number of toothbrushes sold by the supermarket chain grew to 50 percent in a month during which a discount of 80 percent was offered on these toothbrushes.
DElectric toothbrushes are about fifteen times as expensive as manual toothbrushes and the consumers who can afford them are not as price-sensitive as the consumers of manual toothbrushes.
EWhen all consumers of toothbrushes are arranged into income-tiers, the proportion of electric-toothbrush users is not the same across all tiers.

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