Which statement from the text gives evidence to support the writer's thesis that physical exercise is worthwhile? a) i consulted my physician, and now it's official: i'm hooked on exercise. b) exercise used to feel like a chore, but now when i miss a workout, i feel like i've missed out on an important part of my day. c) don't get me wrong; the first few days were anything but easy and i was sure that exercise was cutting into other valuable activities d) now, a solid three months into my exercise journey, my body feels and looks stronger, healthier, and more toned, my mind is clearer and more focused, and i'm ready to share what i've learned.