Ooh, this is a tricky one! I'm going to go with C. Data path, average level, and variability - that sounds like it's capturing the key elements. Although, I do like a good trend line, so D is tempting too.
Option D seems to be the best fit. The graph likely shows the data path, trend, and variability of the response measure. This makes the most sense to me.
Regenia
4 hours agoTwana
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5 days agoFlorinda
7 days agoTwana
7 days ago