Answer: Double Replacement
Step-by-step explanation:
This is double replacement.
KBr + AgNO₃ ⇒ AgBr + KNO₃
On the left side K is paired with Br. On the right side K is paired with NO₃.
On the left side Ag is paired with NO₃. On the right side Ag is paired with Br.
The cations, K and Ag, "switched partners" in the reaction.