Answer:
The answer is A) 4.84 cm :P
Explanation:
Gwen wants to create a congruent shape, so, all the sides have to be the same size. And if its a pentagon like in your situation , a pentagon has 5 sides so you have to divide 24.2 cm because it's your regular pentagon by 5 (sides) (24.2 cm รท 5 sides = 4.84 cm )
I hope I helped you :P