Final answer:
A condition is a logical expression, often expressed as an if-then statement. Logical statements can be conditionals, which express a necessary and sufficient condition.
Step-by-step explanation:
A condition is a logical expression.
Conditionals are most commonly expressed as if-then statements, such as "If you eat your meat, then you can have some pudding." They express the logical relations between two propositions.
Logical statements can be conditionals, which express a necessary and sufficient condition. If you want to prove that a conditional is false, you can offer a counterexample.