Free GMAT Practice Question

Question 1 of 1
ID: GMAT-VR-CR-002
Section: Verbal Reasoning - Critical Reasoning (CR)
Topic: Inference
Difficulty level: Medium

Practice Mode: Single selected Question » Back to Overview

Two years ago Wren Hill Garden Centre began sending a monthly email newsletter to members of its loyalty scheme who had given the centre an email address. Members who receive the newsletter now spend an average (arithmetic mean) of 62 dollars a month at the centre; members who do not receive it spend 41 dollars. The centre's manager concludes that the newsletter causes members to spend more, and proposes to gather email addresses from every member so that all of them receive it.

Which of the following, if true, most seriously undermines the manager's conclusion about what the newsletter does?

AThe centre asked for an email address only from members joining its seasonal plant club, who commit to a standing monthly order.

BSince the newsletter began, the number of people holding a Wren Hill loyalty card has risen by 8 percent.

CA handful of members who receive the newsletter say they delete it without opening it.

DMany members who have not given the centre an email address say they would refuse to provide one.

EThe item that recipients open most often in the newsletter is a list of the week's new arrivals, each with a link for reserving it.

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