Question

multiple choice question
animals with a complete digestive tract include
sea anemones.
humans.
flatworms.
cnidarians.

Explanation:

A complete digestive tract has two openings (mouth and anus). Sea anemones and cnidarians (sea anemones are cnidarians) have a gastrovascular cavity with a single opening. Flatworms also have an incomplete digestive system with a single opening. Humans have a complete digestive tract with a mouth (for ingestion) and an anus (for egestion).

Answer:

humans.