Here, you would need to add the preposition "in."
The sentence should read: My elder sister is really interested in the problems of the environment.
Other prepositions would not make sense and could confuse the reader as to the intended meaning.
ANSWER:
You can recognise slanted language when the language contains an intentional positive or negative bias or opinion rather than presenting the information or subject in a neutral manner.
You can refer to the table attached for examples and examine the difference between the way in which the same subject is described in a different manner; the left-hand side of the table presenting the subject in a neutral manner while the right-hand side presenting the subject with a negative bias or opinion.
Hope this helps! :)
Have a lovely day! <3
A. Best the reason why it is not better (even though it sounds right) is because it says "out of the five cousins" there for we are comparing ben to five other people and he is the best.
The university has appointed George Mill, PhD, to head the research project.
Rev. David Forrester will preach at the revival.
Mrs. Roberts announced her retirement after teaching for 35 years.
The Hon. Kyle T. Berringer presides over the Third District Court.
Those are correct