Well I dont agree with you...as this was trick...just answer what is asked...they asked A paragraph not Essay...and multiple paras definitely make a Essay...It is a universal fact...in such questions like Para writing or Essay writing...IF EXAMINER SETS LIMIT regardless of numbers, then always try to adhere with it...for example precise paper of CSS,(Para is also asked in this paper with words limit) or Essay...and you can ask all high level Professors of English also....in this test examiner had set limit...it was WRITE A PARA OF ALMOST 300 words then i dont get fun of writing a Essay...seems weird to me...but yup best of luck and no offence...