Correct Answer: Unidentified

Solution : The correct choice is the first option.

Explanation :

We have to look for a synonym that conveys a lack of acknowledgement or recognition. Unacknowledged means not recognised or not acknowledged. Among the options, unidentified is the closest synonym that implies a lack of acknowledgement or identification.

The meanings of the other options are as follows:

• Notable : It means worthy of attention or remarkable.
• Infamous : It means having a bad reputation, known for negative reasons.
• Name : It means identified or given a name.