Correct option is A
The correct answer is   (a) Galileo Galilei.   
 ·   Galileo Galilei is considered the 'father of modern science' due to his pioneering contributions to the scientific method, observational astronomy, and physics. His work laid the foundation for modern experimental science and challenged the traditional views of the cosmos.   
Information Booster:
 ·   Stephen Hawking : Renowned theoretical physicist known for his work on black holes and cosmology.   
 ·   C.V. Raman : Indian physicist famous for discovering the Raman Effect, for which he won the Nobel Prize in Physics in 1930.   
 ·   Vikram Sarabhai : Known as the father of the Indian space program for his role in establishing ISRO.