Loop Invariants

Step 1: Understanding Loop Invariants.
A loop invariant is a condition that holds true before and after every iteration of the loop. It is used to prove the correctness of the algorithm.

- **Sequence:** Proves that the steps or operations of the algorithm follow a logical order.

- **Initialization:** Proves that the algorithm correctly sets up the initial values.

- **Maintenance:** Proves that the invariant condition remains true during each iteration of the loop.

- **Termination:** Proves that the loop will terminate, and the final condition holds after the loop ends.

Step 2: Conclusion.
The **Maintenance** condition is used to prove the consistency of the algorithm's steps, but it is not a condition that needs to be proven when using a loop invariant. Thus, the correct answer is (3) **Maintenance**.