Question :
In the question given below, out of the four alternatives, choose the one which can be substituted for the given words/ sentence.
One which cannot be seen
Option 1: Opaque
Option 2: Unseen
Option 3: Invisible
Option 4: Vulnerable
Correct Answer: Invisible
Solution : The correct option 3
Invisible means difficult to see.
Opaque means preventing light from passing through and so not transparent or translucent.
Unseen not seen or not able to be seen.
Vulnerable means capable of being easily physically or mentally injured, manipulated, or attacked.