Question

during a lunar eclipse, the moon appears smaller or larger transparent or invisible darker or reddish brighter or whiter

Explanation:

During a lunar eclipse, the Earth blocks direct sunlight from reaching the Moon. However, sunlight is scattered and refracted by Earth's atmosphere, with shorter blue wavelengths scattered away, leaving longer red wavelengths to reach the Moon. This gives the Moon a darker, reddish appearance (often called a "blood moon").

Answer:

C. Darker or reddish