This painting shows an artist's conception of what it would look like to be within Saturn's system of rings. Notice the many whitish "balls" visible in this painting. Based on what you have learned about rings, about how large are each of these "balls," on average?
A) about a size that you could hold in your arms
B) about the size of a large asteroid
C) about the size of Earth's Moon
D) they are microscopic clusters of about 10 to 20 atoms each.

A) about a size that you could hold in your arms

Explanation:

Based on what you have learned about rings,  each of these balls is about a size that you could hold in your arms.

The Saturn's ring system is the most extensive ring system there is in comparison to all the other planets in the solar system. It consists of innumerable small particles in different sizes that orbit around the Saturn

These particles in the ring are made of water ice, with a trace component of rocky material.

i would say b. research typically uses a variety of sources