Answer:
Stand up and Suspended.
Explanation:
We have been given a table that shows the number of different types of roller coasters in the United States. An amusement park wants to build a new roller coaster. They will only build a roller coaster if there are less than r<10, where r is the number of a certain type of roller coaster, to determine which type(s) can be built.
As company will build only those roller coasters whose number is less than 10.
We can see from our table that number of stand up roller coasters is 8 and number of suspended roller coasters is 5.
Since both 8 and 5 are less than 10, therefore, company will built stand up and suspended roller coasters.