I am not too sure there is a clear answer to this question: in principle, you could hold a speech of 10 minutes on any topic, but the depth of the treatment of the topic would have to be adjusted.
I would choose answer C. the history of modern interior design: describing a history of anything requires a lot of details, and those need time.
Specifically, I find that options A and B are very easily condensed for 10 minutes: they are in any case not good options.
D. depends on whether this is just a general introduction or a very detailed, practically oriented, tutorial.
Answer:
Peter has (been) on the phone.
They have (been) at home.
True..............................
