It look like both A & B are both correct usage of commas
Participating in a group discussion
The highways were happy to him because the poet was happy when he traveled them (option 2). He is recalling the place, his past and the memories he had in that place. Even thought, now he is an adult and he is not able to come back. it seems that the "returning" to it is not literal but he is not able to go back to his childhood.
B. Authoritative
This word means reliable or accurate.
