What is the function of the tourism guideboard at the scenic spot?
A.
The tourism guideboard at the scenic spot insures that the tourist could enjoy the travel conveniently.
B.
The tourism guideboard at the scenic spot insures that the tourist could enjoy the travel inconveniently and safely.
C.
The tourism guideboard at the scenic spot insures that the tourist could enjoy the travel conveniently and safely.
D.
The tourism guideboard at the scenic spot insures that the tourist could enjoy the travel safely.