Which term is used to describe a situation where an if statement is placed inside another if statement?

The term used to describe a situation where an if statement is placed inside another if statement is "nested." In programming, nesting occurs when one control structure is included within another, allowing for more complex decision-making processes. By using nested if statements, a programmer can evaluate multiple conditions at different levels of logic and execute specific code blocks based on combinations of those conditions.

For example, consider a scenario where you want to check if a person is eligible for a discount based on their age and membership status. The outer if statement can check if the person is above a certain age, while the nested if statement can check if they have a membership. This layered approach helps to create clear and logical flows in decision-making processes.

The other terms do not accurately describe this situation. Sequential refers to the execution of statements one after the other without any branching. Parenthetical generally pertains to expressions and grouping used in math or logic, while iterative refers to repetition of a process or loop, which does not apply to the structure of if statements.