Correct option is C
The correct option to fill in the blank is (c)
purpose.
Explanation:
The correct phrase is “on purpose”, which means “intentionally or deliberately”.
(Hindi meaning: जानबूझकर)
Example: He pushed her on purpose to annoy her.
Other options:
·
(a) focus – grammatically incorrect in this structure.
·
(b) deliberate – adjective; does not fit after “on”.
·
(d) surplus – unrelated to the context.