Question

which quote from the story best supports the idea that sam is annoyed that anushree caught up to him?
then sam heard footsteps behind him. when he turned around, he saw anushree catching up to him.
she was singing to herself, shattering the tranquil silence.
he spotted a trail marker and headed for it.

Explanation:

The first quote only states Sam saw Anushree catching up, with no emotion shown. The third quote describes Sam acting independently, no link to annoyance. The second quote frames Anushree's singing as disrupting peaceful silence, which implies Sam is irritated by her presence after she caught up.

Answer:

She was singing to herself, shattering the tranquil silence.