Final answer:
A nested conditional statement in Snap involves placing one if-then statement inside another, allowing for complex decision-making structures in a program.
Step-by-step explanation:
A nested conditional statement in Snap is when one conditional or if-then statement is placed inside another. In programming, conditionals are important for decision making and control flow within a program. Nesting expands on this by allowing complex decision structures, where different conditions are checked in a sequence that depends on the outcome of previous conditions.
For example, a basic conditional statement in Snap might check whether a character is on a certain part of the screen. If it is, the program could then nest another conditional to check if the character has collected enough points to level up. This creates a hierarchy of conditions that must be met for certain actions or outcomes.