Answer:
The correct answer is b) Run-on sentence
Step-by-step explanation:
Run-on sentences occur when two or more independant sentences are not joined by a conjunction, semicolon or period.
In this case, the run-on sentence is "they must rely on their advisers these advisers are members of the White House staff"
"They must rely on their advisers" is an independant clause as well as " these advisers are members of the White House staff..." but they are not properly joined. In order to avoid run-on sentence, a semicolon, conjunction or period can be used.