Question

Which of the following color sequences could one of the lights go through as its
color changes?

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

Hint:

Check each step against valid changes.

Answer 1

The Correct Option is D

Step 1: One light changes at a time via: red to from green, red to from orange,
red to from purple, purple to from orange.
Step 2: Sequence must follow these transitions for one light.
Step 3: (D) purple to red (valid), red to green (valid), green to orange (via red) fits.
Step 4: Others violate transitions (e.g., B: green to red to green not direct).