says that the momentum of a closed, isolated system does not change. A The impulse-momentum theorem B. Newton's third law of motion C The law of conservation of momentum D Newton's second law of motion

## Step 1<br />The problem is asking us to identify the principle that states the momentum of a closed, isolated system does not change. <br /><br />## Step 2<br />The law of conservation of momentum is the principle that states that the total momentum of a closed, isolated system remains constant. This means that the total momentum before an event or interaction is equal to the total momentum after the event or interaction, provided no external forces are acting on the system.<br /><br />## Step 3<br />The other options, A, B, and D, are not correct because they do not directly address the conservation of momentum in a closed, isolated system. The impulse-momentum theorem (A) relates the change in momentum of an object to the impulse applied to it. Newton's third law of motion (B) states that for every action, there is an equal and opposite reaction. Newton's second law of motion (D) describes the relationship between force, mass, and acceleration.