Answer: Choice B
Reason
Notice the ratios of 30/10 and 3/1 both reduce to 3. It means the longer side is triple that of the shorter side.
That takes care of two pairs of sides. We have two "S" letters for SAS.
The A in between of SAS refers to the shared overlapped angle KOJ.
So that's why we use "SAS similarity". The answer is between choice B and choice C.
Choice C is a trick answer because the order of the letters is very important. Notice how O and M are the first two letters of OMN. Side OM corresponds to side OJ, which means we go for OJK rather than JKO.
This is why choice B is the answer and why OMN is similar to OJK.