• Complete sentence: Is that the film in which he kills his mother?
- Bangla meaning: এটা কি সেই সিনেমা যেখানে সে তার মাকে হত্যা করে?

• Explanation:
- The phrase refers to something that happens inside the film — "he kills his mother" happens in the film.
- So, we need a relative pronoun + preposition that expresses context.

• in which
- Which is used as the subject or object of a verb to show what thing or things you are referring to, or to add information about the thing just mentioned. It is usually used for things, not people.
- "In which" is used to refer to something happening inside a film, book, story, or location.

• Given options:
ক) of which → সঠিক (এটি Formal English-এ ব্যবহৃত হয় এবং "the condition of the town" বোঝায়)।
- "Of which" is a relative phrase that introduces a subordinate clause, providing additional information about a previously mentioned noun.
- যেমন: They visited the village, the beauty of which was amazing."

খ) whose → ভুল ("whose" is used for possession by people or personified things, যেমন- "the man whose car was stolen")।
- "whose" -এর পরে সাধারণত noun বসে।

গ) with which
- "with which" means "by means of which" or "accompanied by".
- যেমন: The knife with which he cut the bread.

Source:
1. Cambridge Dictionary.
2. Oxford Dictionary.