Manuel is experiencing a mental disorder which is called the major depressive disorder. It has the capability of disrupting the activity of a person in terms of doing activities, disinterest in certain things that they used to live and even sleeping or the way they eat. It could be seen above as Manuel has less interest of the things he used to like and it also disrupts in his daily activities because of his moody character. The reason why it led him to experience it is because of his grand father's upcoming death.
Otto von Bismarck led Germany to unification.
I believe the answer is: Public speaking
There are three major purpose for someone to conduct a public speaking. The first one is to inform the audience, the second purpose is to persuade the audiences to do something, and the third purpose public speaking is to entertain the audiences.
The answer is B profile page because a profile is where a user can introduce themselves and show what they may or may not like
I believe that it would be voting.