Concept used:
A twin prime is a prime number that is either 2 less or 2 more than another prime number.
The difference between the twin prime number is always two.
In twin prime number, both the number should be the prime number.
Calculation:
Twin primes are pairs of successive primes that differ by two.
The primes from 1 to 100 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97
Options:
(37, 41) - Difference between them is 4.
(3, 7) - The difference between them is 4.
(43, 47) - Difference between them is 4.
(71, 73) - Difference between them is 2.
Here, in the given option (71 and 73) are prime numbers and their difference is '2'.