Which literary device does the passage contain?

mirabelle and her mother, sarah, have always been close. that's why it was so hard when mirabelle left home to attend an exclusive boarding school. at school, mirabelle is lonely and finds it hard to make friends. back at home, sarah begins a new job and has trouble learning the ropes and fitting in with her new colleagues. through phone calls and text messages, mirabelle and sarah offer each other support, and soon they are both more comfortable in their new environments.

a. anticlimax
b. parallel plots
c. flashback
d. foreshadowing