The correct option is B stout
The correct option that fits in both the sentences is Option B, stout. Stout means a fat or plump person. It also means brave or bold. Sentence I means that I saw your photo with a stout or a fat person. Sentence II means, I replied boldly that I cannot do this work. Option A, plump means fat or chubby person. Option C 'bulky' means heavy. So, A and B do not fit in sentence II. Option D 'curt' is used in reference with someone's speech which is blunt and rude. Option D doesn't fit in sentence I. Thus, the most apt is Option B, stout.