Synonym of DETECT

Answer: Option A

Discover : find unexpectedly or during a search.
Invent : create or design (something that has not existed before); be the originator of.
Determine : cause (something) to occur in a particular way or to have a particular nature.
Fix : fasten (something) securely in a particular place or position.
Detect : discover or investigate (a crime or its perpetrators).

Synonym of Detect is Discover