The whole idea of lower and upper bounds in Integration is that the lower bound represents the smallest value from which we start summing areas(smallest value of the interval) and upper bound is the value to which we sum to(maximum value of the interval).
(Just gave you an answer describing what it was because you didn’t implant a question so I gave you a definition)
Answer: (B) Issue an alter system switch logfile command.
Explanation:
When the database is in the archive log mode then, the issue in the alter system switch logfile command force the particular switch. It basically produce achieve redo log which is smaller in the size by the dedicated size of the parameter log buffer.
It also govern the particular size of the RAM (Random access memory) buffer by redo log. This command is basically faster to return in the program by the use of redo log.
On the other hand, all the options are incorrect as this command only alter the system and does not alter the database. Therefore, Option (B) is correct.
What is the context of the question? With all that you have provided my best guess would be "computational function/solving"