Question

What must happen for a solar eclipse to occur?

Answer 1

The best answer to the question stated above is letter  C.The moon's orbit must cross the plane of the ecliptic.

>>Solar eclipses happen when the Moon moves between Sun and Earth, blocking the Sun's rays and casting a shadow on Earth.
>>Solar eclipses can happen only during a new Moon.
>>Earth's orbit is called the ecliptic plane as the Moon's orbit must cross this plane in order for an eclipse (both solar as well as lunar) to occur

Answer 2

The moon's orbit must cross the plane of the ecliptic.

That's the answer