Final answer:
Annular and penumbral refer to solar and lunar eclipses, respectively. Hence the correct answer is option C
Step-by-step explanation:
The phenomena referred to as annular and penumbral are associated with solar and lunar eclipses. In a solar eclipse, when the Moon is farther away from Earth, it cannot cover the Sun completely, resulting in a ring of light around the dark sphere of the Moon, known as an annular eclipse. The shadow cast by the Moon during an eclipse has two parts: the darkest part called the umbra and the lighter part called the penumbra.
Hence the correct answer is option C