PLS HELP Which sentence best summarizes the article?

A
Scientists are trying to make sure that no endangered species becomes completely extinct.

B
Scientists believe that 25 percent of all mammals and 10 percent of all bird species will be extinct within three decades.

C
Scientists want to preserve the DNA of endangered species in a frozen state, so they can later make clones of the animals.

D
The DNA, which determines an animal's characteristics, will be preserved at a very low temperature.

1. ( 3rd option ) peter gets into a fight with the musician because they will not play a happy song for him.

2. ( 2nd option) petty arguments like feuds lead to pointless tragedy .

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.

my favorite song is here with us by joy williams. i love joy williams! you should listen to her songs, they are confident and uplifting. listen to one of her songs now and you will be glad you did. joy williams is a confident singer and she always brings me joy. i am going to sing one of her songs at a concert.