Keep moving forward, one square at a time, until the square to the right of the robot is black.
A) Step 1: Keep moving forward, one square at a time, until the square to the right of the robot is black. Step 2: Turn right and move one square forward. Step 3: Repeat steps 1 and 2 three more times.
B) Step 1: Keep moving forward, one square at a time, until the square to the right of the robot is no longer black. Step 2: Turn right and move one square forward. Step 3: Repeat steps 1 and 2 three more times.
C) Step 1: Move forward three squares. Step 2: Turn right and move one square forward. Step 3: If the square to the right of the robot is black, repeat steps 1 and 2.
D) Step 1: Move forward three squares. Step 2: Turn right and move one square forward. Step 3: If the square to the right of the robot is not black, repeat steps 1 and 2.
The correct answer is A).
Explanation: In this scenario, the objective is to keep moving until the square to the right of the robot is black. Option A specifically states to “keep moving forward, one square at a time, until the square to the right of the robot is black,” which aligns perfectly with the given instruction. The next step of turning right and moving forward allows the robot to adjust its position after identifying the black square, and repeating this process ensures continued progress toward the goal. Options B, C, and D introduce conditions or actions that don’t match the original instruction correctly.