hello the answer is B. intensity It reflects how difficult an exercise is for a certain person to complete and the amount of oxygen the body uses to do an exercise and the amount of calories burned while doing the activity. The higher the intensity, the harder the activity, the higher the heart rate, and the more burned calories hope this helps!!!
Space that's my best guess
The enlightenment came up with new ideas in government and polotics, People being questioning the need for all powerful kings.
The best action to take during a earth quake is to take cover, and move away from any building's, street light's, or any types of wires. Doing these thing's can save someone's life. Moving into an open area will keep rubble from falling on a person. Keeping away from wires is a great way to stay safe, in fact. Electrical wires don't shutdown, so if someone where to come in contact with wires, they might get shocked which can lead to death. Staying away from street lights can also save someone's life. During an earthquake, it's posisble that a street light can fall, if you are close to one a street light could lant on you causing serious breakage to your bones, or even death.