Which rate of evolution BEST describes a fossil record that shows many different forms of the same organism over a long period A. Gradualism B. Adaptive radiation C. Convergent evolution D. Punctuated equilibrium

## Step 1<br />The problem is asking us to identify the rate of evolution that best describes a fossil record showing many different forms of the same organism over a long period. Let's analyze each option:<br /><br />## Step 2<br />### **Gradualism**<br />This theory suggests that species slowly change over time. This theory would be the best fit for a fossil record showing many different forms of the same organism over a long period.<br /><br />## Step 3<br />### **Adaptive radiation**<br />This refers to the rapid evolution of many diverse species from a single ancestral species. This doesn't necessarily imply a long period or many forms of the same organism.<br /><br />## Step 4<br />### **Convergent evolution**<br />This refers to the independent evolution of similar features in species of different lineages. This doesn't necessarily imply a long period or many forms of the same organism.<br /><br />## Step 5<br />### **Punctuated equilibrium**<br />This theory suggests that species will exhibit little net evolutionary change for most of their geological history, but when they do change, it is relatively rapid. This doesn't necessarily imply a long period or many forms of the same organism.