The category of galaxy which does not have a distinctive shape is D. an irregular galaxy. A spiral galaxy has a spiral shape, an elliptical galaxy has an elliptical shape, and a barred-spiral galaxy has a barred-spiral shape. The only galaxy type which does not have a constant shape is an irregular galaxy.
The type of galaxy that does not have a distinctive, or any shape at all, is <em>D. An Irregular Galaxy.</em>
Explanation:
The definition of a irregular galaxy is;
A galaxy with no distinct or orderly shape. Many new stars are born in irregular galaxies. This is because these galaxies contain far more gas and dust than elliptical or spiral galaxies.
Also I took the quiz and got it right, here is the proof;
Ventilation is very important because it helps remove the gas form people’s homes and schools and it redirects the random gas outside so it is less likely to hurt people