Although Graham died in 1991, her namesake: the Martha Graham Dance Company-continues
to serve as an innovative force in the world of
2. F. NO CHANGE
G. namesake,
H. namesake-
J. namesake
contemporary dance.

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explanation:

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.

i would have to say "a" or "d".