What is a relative change between two quantities known as?

rate of change

sum

quotient

percentage

A?

Read the scenario.
A lizard is at an initial position of 2 m and walks to a position of 10 m in 4 s.
What is the lizard’s average velocity?

2 m/s

2.5 m/s

-3 m/s

3 m/s

A?

first, I like D. A is ok on second.