When you are asked to identify the writers attitude, you should
look at some of these points:
The writers stated attitude what s/he says openly (this
should not be the main part of your answer, however).
The words used by the writer what the words imply about the
writers attitude.
The balance of views reported whether the viewpoint is biased
or attempts equal discussion of views. If there is bias what does this
suggest about the writers attitude? If there is no bias, what
does this say about the writers attitude?
The people and sources quoted has the writer chosen people
who agree with his/her point of view? What do the sources say about
the writers attitude?
The tone and level of formality whether these suggest the writer
feels seriously or strongly about the subject.