There are 13 species of finches living on the Galápagos
Islands. According to the current scientific hypothesis,
these finches evolved from a species of finch that lived on
the mainland of South America. Thousands of years ago, a
few finches must have become lost and landed on one of
the islands. These finches had to survive in a new
environment. Different pressures caused this new
population of finches to evolve differently from the original
population. The populations became so different that they
could no longer produce offspring together.
Which of the following signal words best starts the last sentence?
OA. Before
B. Meanwhile
C. Eventually
D. First