Passage A

Avalanches are caused by a variety of conditions. When the temperature is cold and snow falls, the snow sticks to the ground. However, when the air temperature changes, the snow may slide away in pieces or slabs. Basically an avalanche happens when the gravity of snow heading downhill is greater than the gravity holds the snow together on the ground. Steep slopes on mountains, a recent heavy snowfall, a weak layer in the snow cover, changes in the weather, and changes in pressure on the surface (such as a skiers's sudden weight) can all contribute to the creation of an avalanche.

Which is the author's purpose for writing passage A?

A.To reveal how gravity contributes to an avalanche
B.To show the effects of stone slabs on an avalanche
C.to inform about the series of events that produce and avalanche
D.to describe methods for avoiding an avalanche

My answer is C

I agree.

Your answer is correct. The author's purpose for writing Passage A is to inform about the series of events that produce an avalanche.

Your answer is correct. The author's purpose for writing passage A is to inform about the series of events that produce an avalanche. This can be inferred from the various conditions and factors mentioned in the passage that contribute to the creation of an avalanche, such as temperature changes, steep slopes, heavy snowfall, weak layers in the snow cover, changes in weather, and changes in pressure on the surface. The passage provides an explanation of how these conditions and factors lead to the occurrence of an avalanche.