Question

multiple-choice question
why are the giraffes tongue blue?
to protect their tongue from sunburn
because the berries are blue
because they are missing vitamins

Explanation:

Giraffes spend a lot of time with their tongues exposed while feeding, and the blue color (due to melanin) helps protect the tongue from sunburn. The option about berries being blue is illogical as diet doesn't cause tongue color change this way, and vitamin deficiency isn't related to this tongue color.

Answer:

A. to protect their tongue from sunburn