Eric designs a study to examine drink preferences of university freshmen. He is planning to have all the freshmen who participate in his study drink a cup of coffee and then rate their enjoyment of the coffee; then drink a cup of tea and rate their enjoyment of the tea; and, finally, drink a cup of milk and rate their enjoyment of the milk. Which kind of design is this?a. concurrent measures
b. posttest only
c. repeated measures
d. pretest/posttest

c) Repeated measures

Explanation:

Repeated measure designing is the design in which same variable's multiple measures are taken under different condition but on the similar subject.It can also be taken over different time period for researching.

According to the question.,Eric is using repeated measures design by researching on people's enjoyment wen drinking coffee, teas and milk at certain time.Thus study is on the similar subject with same participant with repeating act.

Other options are incorrect because research design is not based on posttest ,pretest or concurrent measures .Thus, the correct option is option(c).

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