Question

question 4
a pedal is \a lever pressed by the foot.\ use your knowledge of word roots to correctly guess the definition of pedometer. hint: the suffix -meter means \measuring device.\
a device used to measure how far a person has walked
the distance across a circle
a device that measures how much air is in a tire
a device used to measure a persons heart rate

Explanation:

The root "ped" means foot. The suffix "-meter" means measuring device. So a pedometer is a device related to the foot (walking) and measuring.

Answer:

a device used to measure how far a person has walked