Question

Lara's mouth is dry, and she realizes that she hasn't had anything to drink all morning. the water level in her cells has dropped, and she feels thirsty. as soon as she leaves her classroom, she will go directly to the nearest drinking fountain. which explanation can be used to understand why she is motivated to get a drink?

Answer 1

This is a biological need. Hunger, thirst and sex are the 3 biological needs of the body. When your cells don't get water, they dry put and you get a parched feeling in your throat. In order to rehydrate the cells water needs to be drunk unto a point till your cells are rehydrated again.
Hope this is satisfactory!