1) Pollution is something that should worry us all. (2) We only have a limited amount of natural resources. (3) Pollution significantly damages many of these, like our water and air. (4) Cars and trucks send chemicals that pollute the air. (5) Products like hair spray, spray paint, and even chemicals from our refrigerators and air conditioners can damage our environment. (6) We must make an effort to be more responsible. (7) We need to educate everyone about these dangers and help others learn more about this serious issue. (8) Please do your part to reduce pollution. (9) Our future depends on it! All of the following should help you determine the type of paragraph EXCEPT?
(1 Point)
a"future depends on it"
b" need to educate"
c"make an effort"
d"products like hair spray and spray paint"

1. the relationship between a pronoun and its antecedent- reference

reference refers to the relationship between mainly pronoun and another unit of grammar- noun phrase or noun.

2. a singular noun naming a collection or group- collective noun.

collective noun refers to the kind of noun which refer to the name of people, thing or anything in collective. for instance bundle of sticks, herein 'bundle' is collective noun.  

3. a modifying clause whose subject and/or verb is implied- elliptical clause

it is a clause in which words are being left out. on the other hand, the missing word is understood due to the logic or pattern of the sentence.  

4. two or more nouns and/or pronouns serving the same grammatical function and followed by a pronoun that references one or all nouns- compound antecedent

compound antecedent refers to which is made up of two or more words which are joined by 'or' or 'and.'

5. an adjective clause introduced by a pronoun- relative clause.

relative clauses are the clauses which begin with the relative pronouns such as when, where, which, that or who. the noun that precedes, relative pronouns identify or define that noun.  

6. the word, phrase, or clause to which a pronoun refers- antecedent.

antecedents refers to the phrases, clauses or words which are replaced with one of the third personal pronouns.

in the following paragraph, the fourth sentence the correct answer is: three personal subject pronouns

”she was embarrassed when she found that they had been put back on the shelves…”

a   subject pronoun is a personal pronoun. i, you, he, she it, we, they.  

in the sentence it can be observed she, used twice and they used once. is for this reason that is a three personal subject pronoun sentence.