(i) A={x:x is an integer and−3(ii) B={x:x is a natural number less than 6}The elements of this set are 1,2,3,4 and 5 only.Therefore, the given set can be written in roster form as B={1,2,3,4,5}(iii) C={x.x is a two-digit natural number such that the sum of its digits is 8}The elements of this set are 17,26,35,44,53,62,71 and 80 only,Therefore, this set can be written in roster form asC={17,26,35,44,53,62,71,80}(iv) D = {x: x is a prime number which is a divisor of 60}∴60=2×2×3×5 The elements of this set are 2,3 , and 5 only.Therefore, this set can be written in roster form as D={2,3,5}.