Which of the following types of research is conducted on multiple occasions over time?

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26-01-2017
Physics

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Which of the following types of research is conducted on multiple occasions over time?

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M10421395 M10421395 · Answer 1 · 2017-02-03T18:22:10+01:00

M10421395 M10421395

03-02-2017

I'm assuming the question has the same multiple choices as previous questions asked.

A. experimentalB. longitudinalC. representativeD. cross-sectional

I believe the answer is b. longitudinal

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