Answer:
A. made impossible in advance
Explanation:
Context clues occur in texts where an unknown word is added, but the reader is able to understand what it means without having to use dictionaries, due to the context of the sentence as a whole.
Although you have not presented any words in Italian, in the sentence above, we can see that the unknown word that the sentence presents is the word "precluded", although we do not know what it means, we know that the sentence refers to how it was not It is possible for a woman to plan her summer vacation because of the professional responsibilities she had. In this case, we managed to enter that "precluded" means "made impossible in advance".
Answer:
A. The clause is "that are not registered"
It is essential.
It does not require a comma.
Explanation:
Relative clauses are clauses that actually contain a subject and a verb. They are known to begin with a relative pronoun (e.g who, whose, whom, that or which) or a relative adverb (e.g when, why or where).
Option A is correct because "that are not registered" is actually a relative which uses "that" (a relative pronoun). Also, it is essential because it answers the question "what kind of cars are towed?". It does not require comma.