Do i put a comma after physical? does the comma go somewhere else? the author also expresses the idea that an individual can gain physical, as well as emotional protection simply by belonging to a group of people.

After physical yes, and one after protection making it,

The author also expresses the idea that an individual can gain physical, as well as emotional protection, simply by belonging to a group of people.

hope this helped

answer = d. hope this . : -d

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.