Which sentence explains why

Question

subject-specific words are
important?
They inform the reader
that the author is
writing about a
particular topic.
They help the reader to
analyze any type of
text, no matter the
subject.
They help the reader to
learn new vocabulary
words.
They inform the reader
that the author is an
expert in a specific
field.

Answer 1

The sentence that explains why subject-specific words are important is:

"They inform the reader that the author is writing about a particular topic."