Parts of the following sentence have been highlighted and given as options. Select the option that contains a spelling error.
If more is desired than the instantanious impact on the mind, the advertising value of the poster falls sharply, within limits of outdoor publicity, however it is at present unchallenged.

Correct option is B

Option (b) contains a spelling error.
Correct spelling is: “ Instantaneous” which means occurring or done in an instant or instantly. (तात्कालिक)
Example: The reaction to the chemical mixture was almost instantaneous.
Meanings of the other given options:
· Unchallenged: Not called into question; accepted.
· Desired: Strongly wished for or intended.
· Advertising: The activity or profession of producing advertisements for commercial products or services.