Correct Answer: Recent

Solution : The third option is correct.

Primaeval refers to something ancient, existing, or occurring in the earliest ages, especially the geological or historical past, whereas recent is the opposite of primaeval . It refers to something that is of or has happened in the near past, or not long ago. Thus, it is the correct antonym.

The meanings of the other options are as follows:

• Autochthonic means originating where it's found.
• Primal means primitive or ancient.
• Indigenous means occurring in a natural place or being native.