Choose the alternative which can replace the highlighted word without changing the meaning of the sentence.
He would have been successful, but for his lack of temerity.

Correct option is A

The correct word to replace "temerity" without changing the meaning of the sentence is (a) audacity.
" Temerity" means excessive confidence or boldness, often to the point of being reckless. In this context, "audacity," which also signifies boldness or daring, fits perfectly as a synonym.
Temerity: (Hindi meaning: दुस्साहस, निर्भीकता)
Example: The soldier's temerity led him to attempt the risky mission alone.
Audacity: (Hindi meaning: साहस, निर्भीकता)
Example: His audacity to speak against the injustice inspired many others.
Synonyms: audacity, boldness, recklessness, bravery.
Antonyms: timidity, caution, prudence, modesty.
Meanings of the other options:
· Confidence: (आत्मविश्वास) A belief in one's abilities.
· Sincerity: (ईमानदारी) The quality of being honest and genuine.
· Strength: (शक्ति) The quality of being strong, physically or mentally.