The order of strength of hydrogen bond is:

N - H \dots N > O - H \dots O > F - H \dots F

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N - H \dots N > O - H \dots O > F - H \dots F

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O - H \dots O > N - H \dots N > F - H \dots F

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F - H \dots F > O - H \dots O > N - H \dots N

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Solution

The correct option is D $F - H \dots F > O - H \dots O > N - H \dots N$
Hydrogen bond strength increases with the increase in the electronegativity diiference between the hydrogen atom and the other bonded atom.
The Eelectronegativity of $F, O, N$ follows the order $F > O > N$
So the correct order of strength of hydrogen bond would be,
$F - H \dots F > O - H \dots O > N - H \dots N$

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