Flatworms belong to the phylum platyhelminthes.
Flatworms are bilaterally symmetric.
The phylum platyhelminthes has bilateral symmetry.
What does the phylum Platyhelminthes usually have?

a: resistance
b: Veins and arteries.
c: Leptospirosis
d: sensory neurons
e: bilateral symmetry
f: parasites
g: food and shelter
h: aerobic capacity