The correct answer is c. no one.

The given options are all words that can be used as a pronoun, but in this sentence,"no one"is the correct choice because it correctly replaces the noun"no person."

The correct answer is c. their.

In this sentence,"their"is the possessive form of"they,"referring to the rats. It is used to show possession, in this case, possession of the weight. The other options do not fit the context or are not possessive pronouns.

The correct answer is b. the one.

The use of"the one"in this sentence is grammatically correct and it refers to the specific instance of the name used in the application. It is the only option that correctly replaces the noun phrase"the name you used in your application."

The correct answer is d. no one.

In this sentence,"no one"is used to describe a situation where there is no one available to look after the baby. It correctly replaces the noun phrase"no person"and expresses the idea that there is no one around to take care of the baby.

The correct answer is b. no one.

In this sentence,"no one"is used to compare John's chess playing ability to that of any other person. It correctly replaces the noun phrase"no person"and expresses the idea that John's chess playing ability is better than that of any other person.

The correct answer is d. one.

In this sentence,"one"is used as a pronoun to replace the noun phrase"something."It correctly expresses the idea that the weight of something can be described as the amount of force exerted on it by gravity.

The correct answer is b. another.

In this sentence,"another"is used to express a contrast between enjoying listening to good music and performing skillfully oneself. It correctly replaces the noun phrase"another thing"and expresses the idea that performing skillfully oneself is something different from enjoying listening to good music.

The correct answer is c. others.

In this sentence,"others"is used to refer to a group of people other than the ones mentioned in the sentence. It correctly replaces the noun phrase"other people"and expresses the idea that children should be taught how to get along with other people in addition to those mentioned in the sentence.

The correct answer is a. nothing else.

In this sentence,"nothing else"is used to emphasize that there was nothing else left for them to eat because they were very poor and had nothing else available. It correctly replaces the noun phrase"nothing else"and expresses the idea that they had no other choice but to eat wild berries and roots because they had nothing else left.

The correct answer is b. every other.

In this sentence,"every other"is used to describe a pattern of alternating days, such as Tuesdays, Thursdays, and Saturdays in this case. It correctly replaces the noun phrase"every other day"and expresses the idea that the subject goes to the cinema on alternating days of the week.