Choose the option to fill in the blank in the sentence given below.
Nothing will be gained ____ hurry.

Correct option is C

Correct option: (c) by
Meaning & usage (in detail):
• Expression: by hurry / by haste (more common: by hurrying / by being in a hurry) → meaning: “because of hurry / by doing things hurriedly” (Hindi: जल्दबाज़ी से / हड़बड़ी करके)
• Here, the intended meaning: Hurrying will not help.
Correct sentence: Nothing will be gained by hurry.
Grammatical rule (English):
• by can show means/method: by + noun/gerund (by practice, by studying, by hurrying).
व्याकरणिक नियम (Hindi):
• by का प्रयोग “तरीका/माध्यम” बताने के लिए होता है: by + noun/verb-ing (उदा. by मेहनत, by पढ़ाई)।
Meanings of other options (in detail):
• (a) with → के साथ (Hindi: साथ में)
• (b) in → में (Hindi: में)
• (d) through → के माध्यम से/द्वारा (Hindi: के जरिए) (यहाँ expression-natural नहीं)
Hence, option (c) is the correct answer.