Answer:
The correct answer is: "However".
Step-by-step explanation:
"However" is the correct answer because the second sentence seems to be a constrast to the first one, since it is not rightful to expect a majority of only male students when all vagues should be equal to male and female students. Although the second sentence is literally an additional information provided by the text, which sounds like a report or some news, something that could mean the use of "Additionally", this is not the most correct option because of the context explained above.