[tex]\implies {\blue {\boxed {\boxed {\purple {\sf { D. \: \frac{3}{5} }}}}}}[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]

[tex] \frac{2}{3} \times \frac{9}{10}\\ [/tex]

[tex] = \frac{2 \times 9}{3 \times 10} \\[/tex]

[tex] = \frac{18}{30}\\ [/tex]

[tex] = \frac{3}{5} \\[/tex]

[tex]\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35♛}}}}}[/tex]