To identify which regions represent set $B$ from the Venn diagram:

• Set $B$ is the middle circle, as labeled.
• The regions inside $B$ are:
  • II (shared with $A$)
  • V (shared with both $A$ and $C$)
  • III (only in $B$)

Thus, the regions that represent set $B$ are II, III, and V.

Would you like more details or have any questions?

Here are 5 related questions you might find helpful:

1. How do Venn diagrams work with three sets?
2. What do intersections between multiple sets represent in a Venn diagram?
3. How can we use set notation to describe relationships in Venn diagrams?
4. What is the union of two or more sets in a Venn diagram?
5. How do you find the complement of a set using a Venn diagram?

Tip: In Venn diagrams, regions where two or more sets overlap represent elements common to all involved sets.