Final answer:
Monounsaturated fat is considered healthy because it has a bent structure due to the presence of a double bond. This structure prevents the fat from packing tightly and keeps it liquid at room temperature.
Step-by-step explanation:
The type of unsaturated fat that is considered healthy because it has a bent structure is monounsaturated fat. Monounsaturated fats have one double bond in their molecule, causing a kink in their structure. This kink prevents the fatty acids from packing tightly and keeps them liquid at room temperature.
Learn more about Monounsaturated fat