Answer: The correct option is "a tree trunk".
Explanation:
Transparent is a material which allows the light to pass through it.
For example, glass.
An opaque is a material which does not allow light to pass through it.
For example, wood.
Translucent is a material which allows light partially to pass through it.
For example, butter paper.
In the given options, a pair of eyeglasses, a clear water bottle, a car windshield are transparent materials. But a tree trunk is an opaque as it does not light to pass through it.
Therefore, a tree trunk is least likely allow light to pass through it.
