Which of the following is equivalent to \(\dfrac{4}{5}\)?
(a) \(\dfrac{5}{4}\)
(b) \(\dfrac{16}{25}\)
(c) \(\dfrac{16}{20}\)
(d) \(\dfrac{15}{25}\)
\(\dfrac{4}{5} = \dfrac{4 \times 4}{5 \times 4} = \dfrac{16}{20}\).