question 24\nwhat is the central idea of the text?\na. dark matter is a potential source of energy for…

question 24\nwhat is the central idea of the text?\na. dark matter is a potential source of energy for earth.\nb. dark matter is invisible matter that scientists study indirectly.\nc. dark matter is created from the remains of dead or failed stars.\nd. dark matter is becoming increasingly difficult for scientists to locate.

question 24\nwhat is the central idea of the text?\na. dark matter is a potential source of energy for earth.\nb. dark matter is invisible matter that scientists study indirectly.\nc. dark matter is created from the remains of dead or failed stars.\nd. dark matter is becoming increasingly difficult for scientists to locate.

Answer

Brief Explanations:

Dark matter is known to be invisible and scientists study it through indirect methods like its gravitational effects on visible matter. Option A is not a common - known property of dark matter as an energy source for Earth. Option C is incorrect as there is no evidence that dark matter is created from star remains. Option D is not the central idea as the focus is more on what dark matter is rather than the difficulty of locating it.

Answer:

B. Dark matter is invisible matter that scientists study indirectly.