Which word shows the best meaning of the underlined word in this paragraph?
My grandparents are taking a trip for their fiftieth anniversary celebration. Part of it is a train excursion that is to last eight hours. That includes three hours for lunch and shopping. They are also taking a side expedition to a cave.
A.
journey
B.
passage
C.
tunnel
D.
exercise
(the underline word is excursion)