Select the three major body regions present in all mollusks.Multiple select question.tentaclesmantlemuscular foottailvisceral mass

To answer the question about the three major body regions present in all mollusks, let's analyze the options provided:

1. Tentacles: These are not a major body region but rather sensory organs that some mollusks have (e.g., cephalopods).
2. Mantle: This is a significant body region that covers the mollusk's body and secretes the shell (if present).
3. Muscular Foot: This is another major body region used primarily for locomotion.
4. Tail: Generally not a distinct body region in mollusks.
5. Visceral Mass: This is the part of the mollusk that contains most of the internal organs and is a major body region.

Final Answer

The three major body regions present in all mollusks are:

1. Mantle
2. Muscular Foot
3. Visceral Mass