Question

question 5 of 25 a scientist studies how sunlight affects a persons skin. which statement is a hypothesis that he can test by performing a scientific investigation? a. if people have suntans, then they look better. b. children should be allowed to play outside on a sunny day if they are wearing sunscreen. c. the most enjoyable time to be in the sun is before 10 a.m. d. if you spend more time in the sun, your skin will become drier.

Explanation:

A hypothesis must be testable and relate to the effect of sunlight on skin. Option A is about appearance (subjective), B is a recommendation, C is about enjoyment (subjective). Option D states a testable relationship between sun exposure time and skin dryness, which relates to sunlight's effect on skin.

Answer:

D. If you spend more time in the sun, your skin will become drier.