[tex]\huge\text{Hey there!}[/tex]
[tex]\huge\boxed{\mathsf{3(4x - 8)}}\\\huge\text{DISTRIBUTE 3 WITHIN the PARENTHESES}\\\huge\boxed{\mathsf{= 3(4x) + 3(-8)}}\\\huge\boxed{\mathsf{= 12x - 24}}\\\\\huge\boxed{\textsf{Answer: Option D. \bf 12x - 24}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]