Answer :
A feature that could often be seen in more exotic grottos was b. a fountain or pool.
What comprises a foreign grotto?
A grotto is a type of cave that is built indoors as an attraction for people to admire.
Exotic grottos often took things a step further by including a fountain or pool to give the grotto a more realistic look.
Find out more on grottos at https://brainly.com/question/1069803.