The phrase <em>with exciting plots </em>is used as D. adjective phrase, because it modifies the noun <em>books.
</em>What kind of books? - (The ones) with exciting plots. <em>
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Sentences that delay the main point until the end of the sentence are called periodic.
<span>Originally Published in 1978, this special twenty-fifth-anniversary edition of the National Book Award finalist includes an entirely new afterword in which the author considers the current state of knowledge about wolves and recent efforts to rein-troduce wolves to their former habitats in American wilderness areas. Humankind's relationship with the wolf is based on a spectrum of responses running from fear to admiration and affection. Lopez's classic, careful study won praise from a wide range of reviewers and went on to improve the way books about wild animals are written. Of Wolves and Men reveals the uneasy interaction between wolves and civilization over the centuries, and the wolf's prominence in our thoughts about wild creatures.</span>
The correct answer is one main clause.
This means that there is only one verb in the sentence, which in this case is the verb 'was.' Even though drive is also a verb, in this context it is used as an adjective driven (participle form of the verb to drive) and is thus not considered to be a verb. This means that there are no subordinate clauses but rather just one main clause.
