Concept:The same sequence of operations is applied to each set: add 5, add 10, then multiply by 5.Explanation:For the first set: 18+5=23, 23+10=33, 33×5=165.For the second set: 39+5=44, 44+10=54, 54×5=270.So the pattern is: first number +5, second number +10, third number ×5.Check option A: 50+5=55, 55+10=65, 65×5=325. This matches fully.Check option B: 7+5î€ =17, so it is incorrect.Check option C: 39+5î€ =49, so it is incorrect.Check option D: 28+5î€ =39, so it is incorrect.Only option A follows the exact operations of the given sets.Answer:Option A: 50−55−65−325