Fill in the blank with the correct preposition.
He is enamoured ______ philosophy as a subject.

Correct option is C

The correct option to fill in the blank is (c) with.
Detailed Explanation (English):
• “Enamoured” means strongly attracted to / very fond of something.
• The correct collocation is enamoured with (also “enamoured of” is seen, but in exam usage “with” is commonly tested with objects/ideas).
• Here, the person is attracted to philosophy as a subject, so with fits best.
Correct sentence: He is enamoured with philosophy as a subject.
Grammatical Rule Used (English):
• Certain adjectives take fixed prepositions (collocations).
• “Enamoured” commonly takes with/of depending on usage; here the correct option given is with.
Grammatical Rule Used (Hindi):
• कई adjectives के साथ preposition fixed होता है।
• “Enamoured” का अर्थ “बहुत अधिक आकर्षित/मोहित” होना है और यह सामान्यतः with के साथ प्रयोग किया जाता है।
Meanings of the other options:
• (a) Towards: दिशा/रुझान दिखाता है (की ओर)
• (b) For: कारण/उद्देश्य या पसंद (के लिए)
• (d) Of: “का/के” अर्थ देता है; यहाँ विकल्पों में सही उत्तर (with) है
Example:
• She is enamoured with the idea of travelling alone.