please help!!! Thanks!!

Answer:
C. [tex] \dfrac{\sqrt{7}}{2} [/tex]
Step-by-step explanation:
[tex] \dfrac{\sqrt{14}}{2\sqrt{2}} = [/tex]
[tex]= \dfrac{\sqrt{2 \times 7}}{2\sqrt{2}}[/tex]
[tex]= \dfrac{\sqrt{2} \times \sqrt{7}}{2\sqrt{2}}[/tex]
[tex] = \dfrac{\sqrt{7}}{2} [/tex]
Answer: C. [tex] \dfrac{\sqrt{7}}{2} [/tex]