Biochemical tests identify sugars and proteins Steps:

• Benedict's test turns blue to orange/red for reducing sugars (e.g., glucose); Solution 1 positive directly, so reducing sugar.
• Non-reducing sugars like sucrose give negative Benedict's but positive after acid hydrolysis (breaks to glucose/fructose); Solution 2 matches sucrose.
• Biuret test turns blue to purple for proteins; Solution 3 indicates protein like amylase enzyme.
• Sucrose in Solution 2; amylase in Solution 3.

Why C is correct:

• C identifies Solutions 2 (sucrose via hydrolysis-positive Benedict's) and 3 (amylase via biuret-positive for proteins).

Why the others are wrong:

• A includes Solution 1 (reducing sugar, not sucrose or amylase).
• B includes Solution 1 (reducing sugar, not sucrose or amylase).
• D excludes Solution 3 (amylase as protein).

Final answer: C