Many insects are iridescent, or have colors that appear to shimmer and change when seen from different angles. Scientists have assumed that this feature helps to attract mates but could also attract predators. But biologist Karin Kjernsmo and a team had the idea that the shifting appearance of colors might actually make it harder for other animals to see iridescent insects. To test this idea, the team put beetle forewings on leaves along a forest path and then asked human participants to look for them. Some of the wings were naturally iridescent. Others were painted with a nonchanging color from the iridescent spectrum, such as purple or blue.

Which finding, if true, would most directly support the team's idea?

Question

Accepted Answer

On average, participants found most of the purple wings and blue wings and far fewer of the iridescent wings.

Answer

On average, participants found the iridescent wings faster than they found the purple wings or blue wings.

Answer

Some participants reported that the purple wings were easier to see than the blue wings.

Answer

Some participants successfully found all of the wings on the leaves.