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Cosmology is is the study of the universe in totality, cosmetology is the treatment of skin, of hair, and nails....not parallel ...treatment of X,of X and of Z ...is the required format ..b. the study of the universe in its totality, cosmetology being the treatment of skin, hair,.....use of being makes it passive .
c. the studying of the universe in its totality; cosmetology studies the treatment of skin, hair, and ...studying and studies are not parallel..
d. the study of the universe in its totality; cosmetology is the treatment of skin, hair, and....correct choice ..
e. to study the universe in its totality, while cosmetology is to treat skin, hair, and...akward sentense construction .



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