Correct evaluation of diffusion statements Steps:

• Evaluate first statement: Diffusion moves molecules from high to low concentration, so ✓.
• Evaluate second statement: Diffusion occurs in living and non-living systems (e.g., ink in water), so "only within living systems" is false (✗).
• Evaluate third statement: Higher temperature increases molecular kinetic energy, speeding diffusion rate, so "rate slows down" is false (✗).
• Match to options: Only A has ✓ ✗ ✗.

Why A is correct:

• It accurately identifies the true movement direction (high to low concentration per Fick's law) and falsity of the other claims.

Why the others are wrong:

• B: Incorrectly marks concentration gradient as false (✗ instead of ✓).
• C: Incorrectly marks temperature effect as true (✓ instead of ✗).
• D: Incorrectly marks all statements, including the true concentration gradient.

Final answer: A