Answer:
Bro, I need to see the passage. And according to what i see here, I think it is D
Explanation:
I would say the correct answer is that has an undetermined answer.
If a subject has been thoroughly covered, then there is no need for this researcher to do it all over again. If it's impossible to answer, there is no need to try. If it can be answered easily, then it doesn't really require a research. This leaves us with the last option, because a researcher might want to try and determine the answer.
Because the moon feels left out, but the moon is needed
Is that a song or something?
Examples:Psychological mind games,tag on ice,hide and clap,wrestling,baseball