Answer:
a i think
Explanation:
its definetly not c and i dont think its b
Alexis Clairaut a French astronomer and mathematician whom also a prominent Newtonian whose work facilitated to create the validity of the principles that predict regarding Halley’s comet and gives importance which demonstrated and evidenced that the theories of motion and gravity are correct which is Isaac Newton’s Theory.
I believe your answer is a I had this question on my test yesterday