Скачать или смотреть Sat practice test 7 Question 17 module 1 Reading & Writing

Narwhals are shy whales that live in the remote
Arctic Ocean. Some of them have a long tusk, like a
unicorn horn, with sensitive nerves. Narwhals are
known for this tusk, but many actually don’t have
one and its purpose is unknown. One group of
scientists came up with a possible purpose in 2014.
The scientists suggested that the tusk may help
narwhals determine when water around them is
likely to start freezing and become dangerous for
them. Marine biologist Kristin Laidre disagrees with
that idea, though. She reasons that if the narwhal’s
tusk serves such an important purpose, then it’s most
likely that _______
Which choice most logically completes the text?
A) some narwhals would seek a new habitat.
B)
fewer marine animals would also have tusks.
C)
more narwhals would have a tusk.
D)
narwhals would become less shy over time.