The number of dark spots that appear on the Sun, known as sunspots, can vary greatly. For example, there were about 180 sunspots in November 2001. ______ there were only about 2 sunspots in December 2008.

Which choice completes the text with the most logical transition?
Choose 1 answer:
Choose 1 answer:
(Choice A) In other words,
A
In other words,
(Choice B) Similarly,
B
Similarly,
(Choice C) Therefore,
C
Therefore,
(Choice D, Checked) By comparison,
D
By comparison,