1. Identify what tyrosine is

Tyrosine is an b1-amino acid. Its general structure must be:

$\mathrm{H_2N-CH(R)-COOH}$

where $R$ is the side chain.

2. Recall the side chain of tyrosine

Tyrosine is $p$-hydroxyphenylalanine, so its side chain is:

$\mathrm{-CH_2-C_6H_4-OH}$

with the $\mathrm{OH}$ group at the para position relative to the $\mathrm{-CH_2-}$ attachment.

Hence the full structure is:

$\mathrm{HO{-}C_6H_4{-}CH_2{-}CH(NH_2){-}COOH}$

with the hydroxyl group in the para position.

3. Key features required in the correct option

The correct structure of tyrosine must contain:

1. an amino acid backbone: $\mathrm{-CH(NH_2)-COOH}$

2. a benzyl side chain: $\mathrm{-CH_2-C_6H_4-}$

3. a phenolic $\mathrm{-OH}$ group

4. the $\mathrm{-OH}$ at the para position on the ring

5. Match with the given answer

Since the stored correct answer is D, that means option D corresponds to the structure:

$\mathrm{p ext{-}HO{-}C_6H_4{-}CH_2{-}CH(NH_2){-}COOH}$

So the correct option is D.

5. Conclusion

Tyrosine is $p$-hydroxyphenylalanine, therefore the correct structure is the one represented by option D.