Question

A. All leaves are green.
B. All leaves have chlorophyll.
C. Chlorophyll is green.
D. All plants have leaves.
E. All plants have chlorophyll.
F. Only leaves have chlorophyll.

• A. BDE
• B. BEF
• C. BDF
• D. AEF

Hint:

Follow multi-step inference across categories like leaf → plant → property.

Answer 1

The Correct Option is A

B: All leaves have chlorophyll.
D: All plants have leaves.
E: All plants have chlorophyll.
From B and D, we conclude: \[ \text{Plants have leaves} + \text{Leaves have chlorophyll} \Rightarrow \text{Plants have chlorophyll} \] Hence, B + D \Rightarrow E.