Select the most appropriate option to fill in the blank.
Only students with ________ understanding of the subject matter could follow the lecture.

Correct option is B

✔️ The correct option is (b) an erudite.
· Explanation:
· The sentence refers to students who were able to follow a complex lecture, suggesting a deep or scholarly understanding.
· “Erudite” means having or showing great knowledge.
· Grammatical rule used:
· Article “an” is used before vowel sounds (like "e" in erudite).
· ✦ Hindi Explanation: "an" का प्रयोग स्वर ध्वनि से शुरू होने वाले शब्दों से पहले किया जाता है। “erudite” का अर्थ है विद्वान या ज्ञानवान।
· Meanings of the other options:
· (a) a cursory
· Meaning: Hasty and therefore not thorough.
· Hindi: सरसरी या जल्दी में किया गया
· ❌ Incorrect as it suggests superficial understanding.
· (c) a sullen
· Meaning: Bad-tempered or gloomy.
· Hindi: रूखा, चिड़चिड़ा
· ❌ Not related to understanding.
· (d) an arcane
· Meaning: Understood by few; mysterious.
· Hindi: रहस्यमय, गूढ़
· ❌ Describes the topic, not the level of understanding.