Question

multiple choice question
for how many years will a typical scalp hair in a young adult grow, before it stops growing and eventually falls out?
3 to 5 years
1 to 2 years
10 years or more
6 to 8 years

Explanation:

Scalp hair in young adults has a growth phase (anagen) that typically lasts 3 to 5 years before entering the resting and shedding phases.

Answer:

3 to 5 years