Final answer:
The correct answer is option b) numdoubles = input("Enter an integer:").
Step-by-step explanation:
The correct answer is option b program asks the user to input an integer using the input() function and stores the value in the variable numdoubles. The function input() allows the user to enter a value, and in this case, the prompt 'Enter an integer: ' will be displayed to the user. Once the user enters the value, it will be stored in the variable numdoubles.