Which sentence uses vivid language to establish a confident tone?

a. biomechanical engineers now design metal prostheses for animals that need new limbs.

b. our dog koz has three legs, but people rarely notice because he has ultra-long hair and does not limp.

c. my dog and i have been training for months, and i think we now have the potential for being finalists in the canine agility trials.

d. the path to my future career is arrow-straight: i have an unwavering commitment to injured animals live normal lives.