123456789101112(a)123456789101112(b)123456789101112(c)123456789101112(d)A(a)B(b)C(c)D(d) Step-by-Step Solution(a) 2:10: ∣65−60∣=5∘. (b) 5:25: ∣162.5−150∣=12.5∘. (c) 9:48: ∣294−288∣=6∘. (d) 7:40: ∣230−240∣=10∘. The smallest is (a). (c) only looks closest.Answer: A) (a)