Cumulus and stratus clouds belong to which cloud group?

A. Puffy clouds
B. High clouds
C. Middle clouds
D. Low clouds
Is it A?

What is the basic cause of ocean tides?
A. Gravitational force of volcanic activity
B. Gravitational attraction between the Moon and the entire solar system
C. Gravitational force of atmospheric pressure
D. Gravitational attraction between Earth, the Moon, and the Sun
Is it D?

3 answers

looks good to me.

What is the basic cause of ocean tides?

D. Gravitational attraction between Earth, the Moon, and the Sun

It's D