Which of these statements best explains concern over greenhouse gases?

Question

A. Greenhouse gases are bad, and need to be eliminated.
B. Some greenhouse gases are good, but the increase over the last 150 years means the planet is getting too warm.
C. Some greenhouse gases are good, but the decrease over the last 150 years means the planet is cooling off too quickly.
D. We need additional greenhouse gases in order to keep our planet warm.

Answer 1

B. Some greenhouse gases are good, but the increase over the last 150 years means the planet is getting too warm.