The answer is
B. In the fall, a bear builds a den.
or
C. A person is shivering in the cold weather.
Mutations can lead to changes in the structure of an encoded protein or to a decrease or complete loss in its expression. Because a change in the DNA sequence affects all copies of the encoded protein, mutations can be particularly damaging to a cell or organism.
You were right, the answer to this is C.
<span>C. Magma is injected into surrounding rock forming an igneous intrusion.</span>
