Options aren't given in the question. However a concise explanation will be given.
Answer:
Length = 1 ; width = 2 and vice versa
Length = 0.5 ; width = 2.5 and vice versa
Explanation:
The perimeter of a rectangle is obtained using the formular :
Perimeter = 2(length + Width)
Hence the sum of the length and width of the rectangle multiplied by 2 should give 6
Hence, possible dimension will. Include :
A dimension whereby the sum of length and width gives 3
Length = 1 ; width = 2 and vice versa
Length = 0.5 ; width = 2.5 and vice versa
These are possible dimension of the rectangle which has a perimeter of 6