We can deduce here that combining sentences 16 and 17 to introduce a list with a colon gives us: D. Students would have time to do the following: relax, pursue their hobbies, and spend extra time with their families.
<h3>What is colon?</h3>
Colon is actually known to be a punctuation mark which is used in English Language to introduce a list of things.
We see here that combining the two sentences in order to introduce a list, "...the following" followed by colon (:) was introduced. This is correct.
Learn more about colon on brainly.com/question/485512
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It is an obscure language, hope i helped u!
