What are the symbols used for variables?

• A. No symbols used for variables.
• B. Logical operators only.
• C. = Equal, <> Not Equal, > Greater Than, >= Greater Than or Equal to, < Less Than, <= Less Than or Equal to
• D. Arithmetical operators only.

Answer: (C)

Comparing values between variables uses a small set of symbols known as comparison operators. They include the equal sign for equality, the not equal symbol, and the greater-than and less-than relations, with their inclusive forms for greater than or equal and less than or equal. These are the tools you use to test how two values relate to each other, which drives decisions in programs and robot logic. For example, you might check if a sensor reading equals a threshold, if one position is greater than another, or if a value is less than or equal to a limit before proceeding. The other options don’t fit because arithmetic operators (+, -, *, /) perform math, and logical operators (AND, OR, NOT) combine conditions, but neither set alone covers the full set of relation symbols used to compare variables.