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We just might have a problem... that you'd understand...

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Here's a little experiment for you to try... hit pause and review this... experiment.

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Which of the following states the trend seen in the experimental data

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in Figure 2 for ants in the "gap apparatus"?

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And here are the potential answers...

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Ok, so for this question, we have to use our knowledge about graphs.

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First things first. The axis titles.

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Titles are our best friends because they tell us exactly what the graph is about.

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The x axis represents days, and the y axis represents the percentage of transported leaves.

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So... our trend has to somehow relate to days and leaves.

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That means we can cross off option B...since the graph doesn't say anything about lazy

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ants who rely on others to forage leaves...

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...and option D, which says that the ants use pheromones

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to guide themselves back to the nest on day 3 and 4.

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The ants may or may not use pheromones...but we don't care... not for this question, at least.

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Right now, all we're concerned with is days and leaves.

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Well, both options A and C are about days and leaves.

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But...option A says that the ants are the most effective at bringing leaves to the nest

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on the first day.

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One look at the graph...and we can immediately cross off option A.

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The ants were the least effective at carrying leaves on day 1.

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They carried... nada. So option A is out.

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Which leaves us only with option C.

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The trend of the graph is that over time,

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the ants become more effective at bringing leaves to the nest.

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Guess this would be a leaf of absence.

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