What does the idiom stand on her own two feet mean

Normally, this idiom means you can provide for yourself; standing on your own two feet is like "I don't need any help from anyone else, I can take care of myself." I hope this helped :)

they are all talking about chocolate (next time you post a question with "which" post the choices too)

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.