Correct option is B
The correct option to fill in the blank is (b) more.
Explanation:
The sentence shows a comparison between two people: your brother and your father.
In comparative structures, we use “more + adjective” for adjectives with more than one syllable like “intelligent”.
Example:
She is more talented than her sister.
Why other options are incorrect:
· (a) most: Superlative degree used when comparing three or more (सर्वाधिक) – Incorrect here
· (c) many: Used with countable nouns, not for comparison of qualities (कई)
· (d) much: Used for uncountable nouns, not in comparisons like this (ज्यादा)