Select the option that can be used as a one-word substitute for the given group of words.
Done without conscious control; unintentional
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Involuntary.
"Involuntary" means done without conscious control or unintentional.
The word is derived from the Latin word "involuntarius" which means "not done of one's own free will."
The other option means:
Invincible means impossible to defeat or overcome.
Invoke means to call upon a higher power or authority for help or support.
Invitro means relating to a process or procedure conducted outside a living organism, typically in a test tube or culture medium.