Answer:
[tex]\boxed {C. -2}[/tex]
Step-by-step explanation:
[tex]\textsf {Substitute x = 5 in the expression :}[/tex]
[tex]\longrightarrow \mathsf{\frac{15 - x}{x - 10}}[/tex]
[tex]\longrightarrow \mathsf{\frac{15 - 5}{5 - 10}}[/tex]
[tex]\longrightarrow \mathsf{\frac{10}{-5}}[/tex]
[tex]\longrightarrow \mathsf{-2}[/tex]
