The correct option is C is lively, vigorous, hardworking with a passion for play.
"The ideal detection dog is extremely energetic with an excessive play drive. These dogs will happily work all day long, motivated by the expectation of a ball game as reward for sample detection." - in the context of this statement, we can conclude that the ideal detection dog is lively, vigorous, hardworking with a passion for play. Thus C is the best answer.