Correct option is B
Option (b) ardous is the incorrectly spelt word.
Correct spelling is: Arduous (कठिन, श्रमसाध्य), which means involving a lot of effort and difficulty.
Example: Climbing the steep mountain was an arduous task, but they completed it successfully.
Meanings of other options:
- Archery: (तीरंदाजी) The sport or skill of shooting arrows with a bow.
Example: Archery requires focus and precision. - Authenticity: (प्रामाणिकता) The quality of being genuine or real.
Example: The curator confirmed the authenticity of the ancient manuscript. - Authority: (प्राधिकरण) The power or right to give orders, make decisions, and enforce rules.
Example: The teacher spoke with authority on the subject.