A hydrofoil is like a boat, but it is much much faster. What type of definition is provided in the sentence?

A hydrofoil is a type of boat that can achieve high speeds.

Explanation:

The answer lies in the question. A hydrofoil is basically a fast boat, "like a boat, but it is much much faster."

Hope this helps!

i have heard the mermaids singing, each to each.

i do not think they will sing to me

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.