If the underlined pronoun is who, then the answer is C) subject. If the underlined pronoun is you, then the answer is indirect object.
The first person point of view is when a character is telling the story from his/her view. In first person point of view, the narrator is a character in the story; the narrator uses the pronouns "I," "we," and "us.".
The third-person point of view is a form of storytelling in which a narrator relates all the action of their work using a third-person pronoun such as "he" or "she."
The answer would be C)Compund-Complex
I think the answer may be water pollution.
water pollution > Water pollution<span> is the contamination of </span>water<span> bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when </span>pollutants<span> are directly or indirectly discharged into </span>water<span> bodies without adequate treatment to remove harmful compounds.
source: Wikipedia </span>