Question

Galaxies whose shape seems to follow no set pattern are classified as

A. irregular.
B. spiral.
C. barred spiral.
D. elliptical.

Answer 1

Galaxies whose shape seems to follow no set pattern are classified as
irregular(meaning; "not even or balanced in shape.")
So your correct answer would be your choice A.
hope this helps :)

Answer 2

The correct answer is (a) irregular.

An irregular galaxy does not have any distinct or regular shape. They do not belong to any any regular class of the Hubble sequence. They are sometimes chaotic in appearance. Structurally these galaxies do not have spiral arm or nuclear bulge. Collectively these galaxy make up one fourth of all galaxies. They are small in size and one tenth the mass of Milky way galaxy.