Question

The fossil record shows...
A. that most organisms that ever lived on Earth are now extinct
B. the only bones and teeth can become fossilized
C. the fossils formed under many different conditions
D. a complete record of every organism that ever existed on Earth

Answer 1

Use process of elimination.

Bones and teeth are most often fossilised but all tissues are preserved to some extent - it is just that after the ages, not enough is left of the others to be recognisable. Fossils formed only under very specific conditions. And many organisms which existed were not fossilised. So that leaves...

Answer 2

a? ;p

Answer 3

I think so, yes.