Answer:
a
Step-by-step explanation:
If the lines DE and BC were parallel then
Δ ADE and Δ ABC would be similar and the ratios of corresponding sides would be equal, that is
[tex]\frac{AD}{AB}[/tex] = [tex]\frac{AE}{AC}[/tex] , substituting values
[tex]\frac{4}{10}[/tex] = [tex]\frac{6}{14}[/tex]
but
[tex]\frac{4}{10}[/tex] ≠ [tex]\frac{6}{14}[/tex]
That is 4 : 10 ≠ 6 : 14 → a
