Benedict's test colors reflect reducing sugar levels Steps:

• Benedict's solution turns from blue (no sugar) to green (trace), yellow (moderate), and red (high) with increasing reducing sugar after boiling.
• Match colors to extracts: 4 (blue, lowest), 3 (green, low), 2 (yellow, medium), 1 (red, highest).
• Increasing quantity orders extracts from least to most sugar: 4 → 3 → 2 → 1.
• Identify option matching this order.

Why D is correct:

• D sequences extracts from lowest (4, no sugar) to highest (1, much sugar), aligning with Benedict's color progression for concentration.

Why the others are wrong:

• A starts high (red) and zigzags without steady increase.
• B jumps from low (green) to high (red) then falls to no sugar (blue).
• C rises to high (red) but ends with no sugar (blue), breaking increase.

Final answer: D