A hypothesis for why narwhals have long tusks can be made using the concept of sexual selection. Which one of
the following predictions would come from such a hypothesis? (application level)
O In contests over females, the best-nourished male should always, or almost always, win.
O In contests over females, the male with the longest tusk should always, or almost always, win.
O In natural populations, female tusk length should decline over time.
O Young males that are given extra amounts of high-quality food should grow particularly long, strong tusks.