Answer:
Check all possible effects of this selective pressure.
✓ Flock X may try to eat other foods.
✓ Flock X could migrate in search of fruit.
✓ Flock X could slowly decrease in number.
✓ Flocks Y and Z could benefit and increase.
✕ Flock X could try to mutate.
Explanation: Got 100% on warm-up on edge. good luck :)