What might avert the danger of the building up of a high concentration of aerosols

A．By absorbing more and more particles.
B．By reflecting much of the sun's heat.
C．By attracting more and more travelers.
D．By increasing the carbon dioxide content of the atmosphere.

A．discuss the negative aspects of being attractive
B．give advice to job-seekers who are attractive women in executive and political circles
C．demand equal rights for women
D．emphasize the importance of appearance