Remark
You have to work on the die first. You have 3 primes for sure -- 2, 3 and 5. You might wonder about 1. Most experts agree that 1 is not prime. The reason is that a prime requires exactly 2 different divisors -- one and itself. The word different eliminates 1. So the die will give a prime 3 out of 6 chances.
There are 4 colors on the spinner. Two of the four (yellow or blue) will give the correct results. So the chances of yellow or blue coming up are 2 out of 4 chances.
Result
The result of the die landing face up showing a prime is P(prime)=3/6 = 1/2
The result of getting the correct color = 2/4 = 1/2
The Probability of getting both = 1/2 * 1/2 = 1/4
Answer: A
