Question

Paleontology is the study of
A. Breasts
B. Birds
C. Fossils
D. Bones

Answer 1

Hint: Paleontology is the branch which is mainly concerned in aspects of the biology of all ancient life forms which includes their shape, structure, evolutionary patterns, and their taxonomic relationships with one another and with present living species, and in their distribution in geographical Pattern and their relationships to the environment.

Complete answer:
It is nothing but the scientific study of the geologic past that involves the analysis of plant and animal fossils and their microscopic size preserves, etc.
It plays a very important role in reconstructing the earth's history.
Paleontology has to provide much evidence to support the theory of evolution.
As time goes the knowledge regarding the Paleontology has increased and it is divided into subdivisions, where some of them focus on the fossil organisms and some other focus on ecology and history of the environment and ancient Climate, etc.
The principle type of evidence of the ancient times was body fossil and other trace fossils of the environment.
And these body fossils and trace fossils are responsible for some principal types of geochemical evidence and help to know the evolution of life before there were organisms.
 In geochemical evidence, some of them show adjacent rock layers that allow radiometric dating and where they provide some data such as absolute dates which are very accurate which is to within 0.5%.
And most of the paleontologists had depended on radiometric dating which is relative and helps to solve the "jigsaw puzzles" of biostratigraphy.

So, Correct option is C. Fossils.

Note: Fossilization is the very rare event that occurred by destroying either by erosion or by metamorphic before those can be observed, but this organism bodies of the fossils are most important, which gives the very informative evidence such as wood, bones, etc.