Question

Which contribution to the body of scientific knowledge is most recent?

the development of the lever
the discovery of the structure of DNA
the discovery of electricity
the theory of evolution

Answer 1

B. The discovery of the DNA structure

Step-by-step explanation:

Answer 2

Hi there!

Your answer is B. The discovery of the DNA structure

Step-by-step explanation:

In 1953 James Watson and Francis Crick discovered the double helix structure to DNA!