Donna is concerned about her adolescent daughter's tendency to flare-up at the mildest provocations. Donna says that her daughter refuses to see reason sometimes and is unable to exercise much self-control. As a specialist in the development of adolescents, you would tell donna that her daughter's behavior could partly be explained by the biological reason that

Explanation:

Based on the scenario being described it can be said that this would partly be explained by the biological reason that the amygdala, which is the seat of emotions such as anger—matures earlier than the prefrontal cortex in adolescents. Thus mostly explaining why Donna is first and foremost clouded by her emotions instead of logically reasoning through a situation.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.