To answer this question, the user needs to understand what a procedure is and how it is called in a program. In general, a procedure is a block of code that performs a specific task and can be called from other parts of the program where that task needs to be performed.

Now, let's go through each option and explain why it is right or wrong:

A. 1: This option is incorrect. A procedure can be called from multiple places in the code. If a procedure is designed to perform a specific task, it can be called from different parts of the code where that task is needed.

B. 2: This option is incorrect. A procedure can be called from more than two places in the code. It all depends on how the procedure is designed and how many times that specific task needs to be performed in the program.

C. 3: This option is incorrect. A procedure can be called from more than three places in the code. There is no set limit on how many times a procedure can be called. It all depends on the needs of the program and how many times that specific task needs to be performed.

D. As many times as needed: This option is correct. A procedure can be called as many times as it is needed in the program. There is no set limit on the number of times a procedure can be called. It all depends on the needs of the program and how many times a specific task needs to be performed.

Therefore, the correct answer is:

The Answer is: D