5. The answer is A: incoherent
A) Incoherent: thoughts, ideas etc that are very badly expressed or badly arranged and are difficult to understand.
B) Subordinate: lower; inferior etc
C) Unfanthomable: too mysterious
D) Impede: hinder; delay
6. The answer is D: Bandwagon Appeal - the argument used to convince or persuade people to agree or decide on something just because everybody does.