Which of the following is a valid implementation of binary search in Python?

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Q: Which of the following is a valid implementation of binary search in Python?

Solution: The first option correctly defines a binary search function that takes a sorted array and a target value.

Steps: 6

Step 1: Understand what binary search is. It is a method to find a target value in a sorted array by repeatedly dividing the search interval in half.
Step 2: Identify the components of a binary search function. It should take two inputs: a sorted array and a target value.
Step 3: Check if the function correctly initializes variables for the start and end of the search range.
Step 4: Ensure the function uses a loop to repeatedly check the middle element of the current search range.
Step 5: Verify that the function compares the middle element with the target value and adjusts the search range accordingly.
Step 6: Confirm that the function returns the index of the target value if found, or a value indicating it was not found.