A bird eats a fly. The bird and fly are demonstrating a. Predation b. Parasitism c. mutualism d. commensalism

The correct answer is **a. Predation**.Here's why:* **Predation** is a biological interaction where one organism, the predator (the bird), kills and eats another organism, its prey (the fly).Let's look at why the other options are incorrect:* **Parasitism:** In parasitism, one organism (the parasite) benefits at the expense of another (the host), but the parasite typically doesn't kill the host directly. * **Mutualism:** Mutualism is a relationship where both organisms benefit.* **Commensalism:** Commensalism is a relationship where one organism benefits and the other is neither harmed nor helped.