During exercise, an individual's heart rate tends to increase steadily until a. the athletic activity is completed and the cool down begins b. the individual begins to use advanced breathing techniques c. a level of consistent intensity has been reached d. none of the above

During exercise, an individual's heart rate tends to increase steadily until a level of consistent intensity has been reached. Correct C Afterwards the heart rate decreases back to normal.

As a result of increased exercisethe volume of blood pumped by the heart increases

i think he will be okay, id probably take the dog to the vet just incase