Now Aamir will study at home should be accepted
That leaves out the "now" or aab
They should accept putting the now wherever because you can in English
Is "घर में" the same as "घर पर "?
Yes. They are same.
Why is the audio for ab so weird?
Yes it's difficult to hear as a learner but in normal speech would be fine.
Is *,,will read at home" a possible translation?
Same as above this is correct