Question

In general, more complex animals are
(1 point)
more likely to rely on chemical digestion than to rely on mechanical digestion.

more likely to perform intracellular digestion than extracellular digestion.

more likely to have one body opening than to have two body openings.

more likely to have a digestive tract than to have a gastrovascular cavity.

Answer 1

and if possible explain why

Answer 2

I think its the last one but i'm not sure