Answer:
interrogative and or pronoun
Explanation:
Who (pronoun) The pronoun who, in English, is an interrogative pronoun and a relative pronoun, used chiefly to refer to humans. Its derived forms include whom, an objective form the use of which is now generally confined to formal English; the possessive form whose; and the indefinite form whoever (also whosoever, whom(so)ever
The answer is definitely b
Answer:
option c. blood:veins as water :pipes
A) rare to find and hard to form because in the passage, it mentions that you need specific conditions but they are hard to find (because they get destroyed before they are discovered)