Answer:
certainty (b)
Step-by-step explanation:
Because cataract surgery is a well-known procedure (and is also commonly executed), the general public should have trust in it.
however, because there are many unknowns for people getting the surgery (leading to uncertainty in a mass setting) and it is [typically] operated under anesthesia, people do not always reach this conclusion.
so, few people have certainty about cataract surgery today
hope this helps!!