Question

out her phone, she realizes her battery is low. luckily, she is wearing a special type of knee brace that can convert the energy she generates with her legs natural stepping motion into electricity.

how can the special knee brace help the hiker?

it can produce enough energy to keep her from getting tired.

it can use her legs natural stepping motion to increase her speed.

it can provide the electricity needed to charge her cell phone.

it can give her strength to enjoy the natural beauty around her.

Explanation:

The text states that the knee - brace can convert the energy generated with the leg's natural stepping motion into electricity. Since the hiker has a low - battery phone, the knee - brace can provide the electricity to charge it.

Answer:

It can provide the electricity needed to charge her cell phone.