|Question 15Verbal

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The Millennium Cohort Study (MCS) examines trends in childhood development among 19,000 people in the United Kingdom unfolding over many years. As is true of most longitudinal studies, this need for years of data collection results in high costs. By contrast, a relatively straightforward fitness study, such as one that is merely trying to identify the percentage of regular exercisers in a city who do weight training, may not need a large budget because ______
Which choice most logically completes the text?
19,000 people is more than enough for MCS to find trends in childhood development.
A
longitudinal methods are probably suitable for the fitness study.
B
the fitness study can be done well without years of data collection.
C
it would be easy for MCS researchers to add questions to their childhood development study.
D