What is the most probable relationship between Tom and Jack

A．Michelle likes having a picnic on a summer day.
B．Rose is expecting a gentle breeze to cool herself off.
C．They haven’t had much sunshine recently.
D．Much to their surprise, bad weather is setting in.

A．To think out some difficult problems.
B．To do some cross-country running.
C．To finish a course in physical training.
D．To keep fit and healthy.