Need help with this tricky question. thanks

C. 4
GF is 6 so GE is 3
this is one of the pythagorean triples
which is 3,4,5
since there is already 3 and 5, length HE is 4

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?