Bart was 16 years old when he moved to New Jersey. He was not happy because there were very few kids his age in his new neighborhood. During the winter, he watched his elderly neighbor, Mr. Jones, remove snow from his sidewalk. After watching, he would go back to playing video games. In the summer, Bart wanted to go swimming in Mr. Jones’s pool but was afraid to ask.

Bart was 16 years old when he came to New Jersey from his home in Pennsylvania. He was dissatisfied with his new area since there were so few children his age there. The winter months were spent watching his elderly next-door neighbor, Mr. Jones, clear snow from his sidewalk. After viewing, he would return to his video game console and continue playing. During the summer, Bart expressed an interest in swimming in Mr. Jones' pool but was too embarrassed to ask.

Explanation:

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the reason some people sacrifice their own life for another person's life could be that they are in love with them and would do anything to keep them safe a protected even if that means risking their life in the process

the correct answer is option d. none of these. it is noted that options a, b, and c share the same content.

despite the valid answer provided at the last sentence of each of the options, a question/answer format shouldn't include humourous themed responses such as "you bet your thermal pj's we do." - unless of course, the answer is carried out in an informal environment. this could be replaced with a simple "yes" or "it is necessary".

the question should be re-phrased to a more appropiate syntaxis. instead of "do we need the greenhouse effect? ", it should be written as "is the greenhouse effect necessary? " in order to give it a general scope, instead of limiting the answer to the needs of "we" the humans.