Evidence that best supports the theory of
biological evolution was obtained from the
(1) investigation of environmental niches
(2) study of fossil records
(3) comparison of the number of cells in organisms
(4) analysis of food chains and food webs

(2) study of fossil records

Explanation:

As we know, fossils are records of organisms that lived thousands of years ago. Fossils are the remains of these organisms and can be used for various studies, in addition to being one of the main evidences of the evolution of species. This is because, through fossils, scientists are able to visualize characteristics of ancestral individuals and relate this to the form of life present on earth previously and the form of life present on earth today. Through this, they can see what characteristics of living beings have been modified over time, thus modulating how evolution happens.

i believe it would be c: tons.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.