Select the appropriate option to fill in the blank.
I haven't seen him _______ last week.

Correct option is D

The correct option to fill in the blank is (d) since.
Explanation:
“ Since” is used with a specific point in time (like “last week”).
Structure: Present Perfect / Perfect Continuous + since + point of time
Example: I haven’t seen him since Monday.
Incorrect options:
· (a) Beyond – means further in space or time (अगला) – incorrect use.
· (b) To – in the direction of; as far as, grammatically irrelevant.
· (c) For – used for duration, not a starting point.
– e.g., I haven’t seen him for a week.