Percentage share of the revenue contributed by Prime to the total revenues of Mola for the entire duration of 4 months

= $\left ( \frac{\textrm{Rides given by Prime in 4 months duration}}{\textrm{Total number of rides in the 4 month duration}} \right ) *100$ %

= $\left ( \frac{75+180+120+90}{170+320+215+190+110+220+180+70+75+180+120+90} \right )*100$%

=$\left ( \frac{465}{1940} \right )* 100$%

=$23.97$%

$\therefore$ Option B $23.97$ is the correct answer.