In flowcharting, which type of instruction belongs inside the diamond-shaped decision symbol?

Introduction / Context:
Flowcharts use standardized symbols to represent program logic. The diamond denotes a decision point—a Boolean test whose outcome directs control flow along different branches. Identifying which statements belong in a decision symbol is fundamental to algorithm design and documentation.

Given Data / Assumptions:

• The diamond symbol expects a yes/no or true/false condition.
• Assignments and I/O are typically represented by rectangles/parallelograms.
• We are choosing among expressions representing a test, an assignment, an output, or data declaration.

Concept / Approach:

A decision node asks a question such as 'A < 10?' and branches accordingly. 'IS A<10' expresses a condition. Assignment (S = B - C) changes state; printing (PRINT A) is output; data declarations are neither tests nor runtime decisions.

Step-by-Step Solution:

Verification / Alternative check:

Flowchart conventions from software engineering texts consistently place relational tests in diamonds and actions in rectangles/parallelograms.

Why Other Options Are Wrong:

• S = B - C: process step, not a decision.
• PRINT A: output, not a decision.
• DATA X,4Z: declaration, not control flow.

Common Pitfalls:

• Embedding computations inside the decision that should be performed in prior process steps.

Final Answer:

IS A<10.