Question

We can watch the phases of the moon change, day by day. A complete cycle of phases takes about ___________ to complete.

A) a year

B) a decade

C)one month

D) a quarter of a year

Answer 1

I believe the answer is C.
Hope it helps!

Answer 2

A complete cycle of phases of the moon takes about 29½ to complete, which is approximately equal to: C. one month.

What is a Moon?

A Moon refers to the natural satellite of planet Earth that shines due to  the reflected light from the Sun (sunlight), as it revolves around the Earth from west to east in 29½ days.

The phases of the Moon.

In Astronomy, there are four (4) Moon phases and these include the following:

• Full Moon

• New Moon

• Third Quarter (Last Quarter)

• First Quarter

In conclusion, a complete cycle of phases of the moon takes about 29½ to complete, which is approximately equal to one (1) month.

Read more on planet Earth here: brainly.com/question/1286910