A. herself and her husband, whom was
"whom" is used incorrectly. "Whom" is used as the object of a verb or preposition, but in this sentence, we need the subject pronoun "who" to refer to "her husband" as the one who was standing beside her.
B. herself and her husband, who was
In this sentence, "who" is the correct pronoun to refer to "her husband" because it is the subject of the verb "was standing. Correct choice
C. herself and her husband, he was
the pronoun "he" is not the correct choice to refer to "her husband" in this context. We need the relative pronoun "who" to introduce a clause about her husband, not just the pronoun "he" standing alone.
D. herself and husband; he were
This option has a punctuation error. A semicolon (;) is used to separate two independent clauses, but "he were" is not a complete independent clause. Also, "he were" is incorrect as "he" is singular, but the subject "he" should be "who" to match with the singular "husband."
E. herself and her husband, standing and smiling at the camera
This option changes the meaning of the sentence. The original sentence suggests that the husband was standing beside her. Option E suggests that both the artist and her husband were standing and smiling at the camera, which alters the intended meaning of the sentence.
Option B