Fill in the blank with a suitable option:
"Which of these films have you seen?"
My friend asked me which of those films _____________.
The two ways of relating what a person has said are 1)direct and 2)indirect (reported speech).In direct speech, the original speaker's exact words are repeated. In indirect/reported speech, the exact meaning is expressed but not necessarily using the original speaker's exact words. Pronouns and possessive adjectives usually change from first or second person to the third person except when the speaker is reporting his own words. Sometimes a noun can be inserted to avoid doubt.
When we turn direct questions and exclamations into indirect speech, they are converted to affirmative statement .( ? and ! is not used).
Option B is correct as when we convert the given direct question to indirect speech which starts with a question word, then the question word (which is used, the present perfect tense is changed to past perfect tense (had), and you to I.
The other options are wrong as have I, you, and have can't be used.
The correct answer is B)I had seen