Extend the given sentence by adding a Subordinate clause to the following main clause: He was the kind of man who read enormous old books.

If he wasn't out skydiving with his college buddies, he was the kind of man who read enormous old books.

He was the kind of man who read enormous old books even though he owned four large-screen TVs and a lifetime movie pass to his neighborhood movie theater.

Explanation:

demonstrative is te word i think

the correct answer is option d. none of these. it is noted that options a, b, and c share the same content.

despite the valid answer provided at the last sentence of each of the options, a question/answer format shouldn't include humourous themed responses such as "you bet your thermal pj's we do." - unless of course, the answer is carried out in an informal environment. this could be replaced with a simple "yes" or "it is necessary".

the question should be re-phrased to a more appropiate syntaxis. instead of "do we need the greenhouse effect? ", it should be written as "is the greenhouse effect necessary? " in order to give it a general scope, instead of limiting the answer to the needs of "we" the humans.