Answer the following question, with explanation first.
Adult urochordates are _-shaped.\nOptions:\n- (A) Length\n- (B) a prism\n- (C) fossils\n- (D) grow\n- (E) barrel\n- (F) fertile\n- (G) Grow well\n- (H) revolving

(E)
Adult tunicates are barrel-shaped.

Urochordates are commonly called tunicates.

Adult urochordates are barrel-shaped.

.

Thus, the answer is (E)