About
of adults aged 18 and older are regularly exposed to secondhand smoke.

Children aged
are most at risk for exposure to secondhand smoke.

Respuesta :

lvvies

Answer:

About 25% of adults aged 18 and older are regularly exposed to secondhand smoke. Children aged 3 to 11 are most at risk for exposure to secondhand smoke.

Explanation:

25%, 3 to 11