Option 3 is the right answer. Let us look into the meaning of the given words:
Rounded: having a smooth, curved surface / complete and balanced.
Factual: concerned with what is actually the case.
Deep: very intense or extreme.
Perfect: completely free from faults or defects.
The given sentence is about creating an impression. So, the right word would be --'deep'. Complete sentence: The incident made a deep impression on Karan.