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B) 7

Step-by-step explanation:

2416 is not prime

2417 is prime

2418 is not prime

2419 is not prime

2419 = 41 × 59

B) 7

Step-by-step explanation:

a prime number is a number that is divisible by 1 and itself . (eg : 3 is a prime number)

1, 3,5, 7, 11, 13, 17, 19, 23

2416 -- is divisible by 2 ..etc.. hence not a prime number.

2417 --- is divisible by 1 and itself --- a prime number

2418-- divisible by 2 ..etc --- not a prime number

2419--- divisible by 41 ..etc... -- not a prime number

hence 2417 is the only one that is a prime number