Be a Lunatic A solar eclipse happens when --
the sun is directly between Earth and moon
the moon is in Earth's shadow.
the moon is directly between Earth and sun.
the sun blocks out light from Earth.

the answer is d (apex) good luck : ))

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.