Select the third definition in this dictionary entry.

buoyant \boi–uhnt\ adjective more buoyant, most buoyant 1. able to float: A Ping-Pong ball is buoyant in water. 2. able to keep a body afloat or cause it to rise: Salt water is more buoyant than freshwater. 3. cheerful: Jack’s football team was positively buoyant after their victory. 4. successful and likely to remain successful: The market remained buoyant as trade increased. — from Spanish (boyante)