a.driving cars

b. releasing gases

c.walking

d.burning fuel

c

A- driving gas/diesel cars/trucks release harmful emissions into the atmosphere.

B- Releasing gases like a fart is definitely not going to contribute to global warming as this is only natural.

C- walking is healthy for the mind and body as it can release stress.

D. burning fuel (read A)

E) None of the above

None of them contribute to man-made Global Warming because it isn't happening.

The Great Global Warming Swindle