The fraction $\frac{4}{5}$ is not equivalent to the fraction

The correct option is B: $\frac{14}{15}$

In an equivalent fraction, the numerator and the denominator of the fraction are multiplied by the same number.

Thus,

$\frac{4\times 2}{5\times 2}=\frac{8}{10}$

$\frac{4\times 3}{5\times 3}=\frac{12}{15}$

$\frac{4\times 4}{5\times 4}=\frac{16}{20}$

However, $\frac{4}{5}$ cannot be expressed as the equivalent fraction of $\frac{14}{15}$.

So, $\frac{14}{15}$ is not equivalent to $\frac{4}{5}$