Question

If X is red and Z is purple, the next color change to occur can be a change from

• A. \( \text{green to red} \)
• B. \( \text{orange to red} \)
• C. \( \text{purple to orange} \)
• D. \( \text{purple to red} \)
• E. \( \text{red to purple} \)

Hint:

Identify valid change from current color.

Answer 1

The Correct Option is C

Step 1: X = red, Z = purple, \( X \neq Z \) holds.
Step 2: Only one light changes; valid changes from current colors.
Step 3: Z (purple) can change to orange (valid transition).
Step 4: (C) purple to orange is possible.