How do researchers investigate ideas and principles about nature?

a. by using the scientific process to study their surroundings

b. by taking classes taught by more knowledgeable professors

c. by researching information in textbooks and on the internet

d. by asking questions about what they do not understand

Most likely A

Explanation:

The answer is most likely A because by using the scientific method they can then look at their surrounding and find what they know and learn more about what they don't know. Hope this helps a bit

A. by using the scientific process to study their surroundings

Explanation: thats the most reasonable answer hope this helps out

answer: c. two haploid cells

explanation: