Answer:
c - having controlled experiments within ethical limits.
Explanation:
He was the first to provide an explanation of evolution supported by evidence.
The most important compound in living beings includes nucleic acid, carbohydrates, proteins and lipids
A makes the most sense, though D could actually be an Ok reason, the other two aren't reasonable, a fire safety action? The door would be better open in a fire emergancy, it makes a quicker escape
