The correct answer is: C. Either I or II is strong
Argument I is strong because it is based on the evidence that internal assessment can lead to favoritism. This is a valid concern, as it is possible for teachers to give higher grades to students they like or who are in their classes more often. Argument II is weak because it is based on the assumption that teaching faculty need to have control over students in order to be effective. This is not necessarily true, as there are many other ways to motivate and engage students.
In conclusion, either argument I or II could be considered strong, depending on the specific circumstances.