Answer:
(3) conducting investigative experiments
Explanation:
According to a different source, these are the options that come with this question:
(1) initiating religious reforms
(2) leading political revolutions
(3) conducting investigative experiments
(4) engaging in foreign conquests
These two scientists and researchers are most closely associated with the activity of conducting investigative experiments.
Galileo Galilei was an astronomer, physicist and engineer. Among the many subjects that he studied are speed and velocity; gravity and free fall; relativity; inertia; projectile motion; the properties of pendulums; compasses and astronomical principles through the use of the telescope.
On the other hand, Issac Newton was an English mathematician, physicist, astronomer, theologian and author. Among his interests were classical mechanics, optics, calculus, the laws of motion, planetary motion, and the theory of colour.