Answer:
A. A precipitate
Step-by-step explanation:
The reaction is a double displacement reaction in which a precipitate, AgI is produced. In a double displacement reaction, there is an actual exchange of partner ions to form new compounds. This type of reaction is usually known for ionic compounds.
Equation;
KI
+ AgNO₃
→ AgI
+ KNO₃
From the reaction above, AgI will result in the formation of a yellow precipitate in the solution.
A precipitate is an insoluble compound formed in chemical reaction.