Translate the following natural language task into code-like logic: 'Calculate the sum of all even numbers in a list'.

• A. Sum of all numbers in the list.
• B. Multiply each number by two and sum.
• C. For n in list: if n % 2 == 0: sum += n
• D. Compute the average of the list.

Answer: (C)

Think of the task as a two-step process: go through every number, decide if it’s even, and if so, add it to a running total. The key idea is using a loop to inspect each item and a conditional to filter only the evens. The modulo operation helps identify even numbers: a number is even when dividing by two leaves no remainder, which is written as remainder equals zero. So you start with a total of zero, loop through the list, and whenever the current number meets the even condition, you add it to the total. After finishing the loop, the total becomes the sum of all even numbers in the list.

This matches the other choices for the task: summing all numbers would include odd ones, doubling each number and summing would produce a sum that doesn’t reflect only the evens, and computing an average would give a mean rather than a total.