The correct option is (A) the term morphology refers to its shape
Astronomers refer to the structural characteristics of galaxies as morphology. The Hubble classification of a galaxy offers one method of characterizing its shape, although this classification scheme only takes the three most noticeable aspects into account: disks, bulges, and bars. Extended star halos, warps, shells, and tidal tails would all be included in a more comprehensive morphological classification of galaxies. The term "morphological peculiarity" refers to galaxies that exhibit these morphological characteristics clearly; their Hubble type is typically preceded by the suffix "pec" (short for peculiar).Models of galaxy formation and evolution can be used to explain both the distinctive characteristics of galaxies and morphological quirks.
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