Topic: Sentence (বাক্য),

Best Answer Explained in Below-:

The correct answer to the sentence "This is the photo _____ my family" is "C) of." This choice is appropriate because "of" is used to indicate a relationship between two things—specifically, that the photo depicts or represents the speaker's family. In this context, "of" connects the photo to its subject, thereby clarifying what the photo is representing or containing.

Let's examine the other options to understand why they are less suitable:

- **A) in**: This preposition typically refers to being inside something. Saying "the photo in my family" would imply that the photo exists within the family itself, which is not logically coherent.

- **B) at**: This preposition indicates a location. Saying "the photo at my family" does not convey any clear relationship; it suggests a physical location rather than the subject of the photo.

- **D) on**: This preposition is often used to denote a surface or a position for display. Saying "the photo on my family" suggests an impossible scenario of a photo being placed physically on family members.

In summary, "of" is the only option that appropriately signifies the subject of the photo, making it the correct choice.