Babies think they 're invincible . They think they 're invulnerable to the rules of society . Today at Chipotle , I was eating a burrito by myself , and this little baby walked up to me , and stared at me . I chewed my burrito , pretending not to notice him , because he obviously must have been very embarrassed that he was gawking .

Q with options: Give answer the following question using evidence from the above passage: Why does the narrator say " he obviously must have been very embarrassed that he was gawking " ?
Possible answers:
(a). The narrator noticed the baby 's embarrassment ..
(b). The narrator was not being serious ..
(c). Babies think they 're invincible ..
(d). The narrator means it sincerely ..
(b).