Comprehensive and Detailed Explanation From Exact Extract:
To determine if one integer is a multiple of another, the modulo operator (%) is used. According to foundational programming principles, the modulo operator returns the remainder of division, and if the remainder is zero, the first integer is a multiple of the second.
Option A: "/." This is incorrect. The division operator (/) returns the quotient of division, which may include a decimal (e.g., 7 / 2 = 3.5). It does not directly indicate if one number is a multiple of another.
Option B: "||." This is incorrect. The logical OR operator (||) is used for boolean operations (e.g., in conditional statements) and is unrelated to checking multiples.
Option C: "+." This is incorrect. The addition operator (+) adds two numbers and is not used to check if one is a multiple of another.
Option D: "%." This is correct. The modulo operator (%) returns the remainder after division. If a % b == 0, then a is a multiple of b (e.g., 10 % 5 == 0, so 10 is a multiple of 5).
Certiport Scripting and Programming Foundations Study Guide (Section on Operators).
C Programming Language Standard (ISO/IEC 9899:2011, Section on Arithmetic Operators).
W3Schools: “Python Operators” (https://www.w3schools.com/python/python_operators.asp).
