Recall our programming problem and imagine the following steps in your plan. Which construct do you think is the most appropriate to implement $"2.$a$.$ Check whether the number is even or not".

$1.$ Ask the user for an ending number.

$2.$ Loop through each number from $1$ to the user$-$provided number. For every number:

$2.$a$.$ Check whether the number is even or not

$2.$b$.$ Display the even number.