Read this excerpt from "A Student's Guide to Global Climate Change." Heat waves are uncomfortable for everyone, but for infants and young children, the elderly, and people who are already sick, they can be especially dangerous. Extreme heat can cause illnesses such as heat cramps, heat stroke, and even death. A 2003 heat wave in Europe caused about 50,000 deaths, and a 1995 heat wave in Chicago caused more than 600 deaths. In fact, heat waves cause more deaths in the United States every year than hurricanes, tornadoes, floods, and earthquakes combined.

What action would a reader be most likely to take after reading this excerpt?

A. conserve water by taking shorter showers
B. limit time outdoors during heat advisories
C. use fans instead of air conditioning to cool off
D. go outdoors only if children and parents do