The toads were destroyed by the construction equipment. The toads died because toads cannot breathe out of water. The toads were frightened and went into the woods. The toads got their food from the wetland ecosystem.
I gave my students this multiple choice question: A wetland was drained to build a mall. Two years later, there were no more toads in that area. Why did the toads disappear?

Only one answer is correct among these 4 choices:
- The toads were destroyed by the construction equipment.
- The toads died because toads cannot breathe out of water.
- The toads were frightened and went into the woods.
- The toads got their food from the wetland ecosystem.

Could you tell me which one is correct?

The toads got their food from the wetland ecosystem.