Which of the following was/were used by the Greek philosophers in order to understand the world?
a Observation
b Experiment
C Reason
d All of the above

Need help

a and c are both correct

Explanation:

The Greek Philosophers had to reject many existing explanations (mostly from the babylonians and the egyptians) because of possible religion bias. They resorted to logic and reason to provide understanding for the world around them. The first set of Greek Philosophers were the Milesian thinkers; whom aside from logic and reason also placed value on Observation in understanding the world.

There are generally no evidence to support the use of experiment to support the claims of the Greek philosophers

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.