Which transition should be used to combine these sentences? for example further to illustrate however

Student drivers are required to keep a log of their supervised driving hours. However, not all students are diligent in their record-keeping.

Explanation:

However is used to present us another statement that in some way contradicts something that was said in the previous one, partially or in the whole. In the given sentences in the first, it is claimed that students must keep a log of their supervised driving hours, yet in the second one there is a statement that not all students follow that rule. So, we have a contradiction between these two statements and using this transition we connect them accurately.

malvolio only loves olivia because he thinks if they get married to olivia he will have a noble title, people to serve him, and fine clothes to wear. also he thinks if they get married he will have many expensive things, and he thinks he will be able to order toby around. malvolio only wants to be noble and boss people around he dose not really love olivia. but viola love for duke orsino is real she really loves orsino.

i think he will fail because he tried to get her to love him and she said oh, you are sick of self-love, malvolio. there is no slander in an allowed fool. so i think she knows what malvolio is trying to do. she knows that he only wants to marry her because he wants to be noble and boss people around so that it why i think she said oh, you are sick of self-love, malvolio. there is no slander in an allowed fool because she new he was selfish.

i would have to say "a" or "d".