Which excerpt from A Princess of Mars most supports the conclusion that the narrator is reckless?

Which excerpt from A Princess of Mars most supports the conclusion that the narrator is reckless?

a. It therefore now occurred to me that the surest way of learning the exact attitude of this beast toward me would be to attempt to leave the room.

b. Furthermore, I could see from the shortness of his legs that the brute himself was no jumper and probably no runner.

c. Evidently his mission was to protect me only, I thought, but when we reached the edge of the city he suddenly sprang before me, uttering strange sounds and baring his ugly and ferocious tusks.

d. As I was to learn, this is the fleetest animal on Mars, and owing to its intelligence, loyalty, and ferocity is used in hunting, in war, and as the protector of the Martian man.