One hypothesis for why elephants have trunks is that it could have developed as an evolutionary adaptation for grasping food and drinking water, enabling the elephant to consume a wider variety of food sources and reach water sources in their environment more easily.
Elephants have trunks that are used for grasping food and drinking water.
### Instruction:
Based on the provided information, generate a hypothesis about why elephants have trunks.

### Input:
Elephants have trunks that are used for grasping food and drinking water.

### Response:
