SAT Question 47624288: Probability And Conditional Probability answer and explanation with Desmos solution

Choice C is correct. If one of these students is selected at random, the probability of selecting a student whose vote for the new mascot was for a lion is given by the number of votes for a lion divided by the total number of votes. The given table indicates that the number of votes for a lion is $20$ votes, and the total number of votes is $80$ votes. The table gives the distribution of votes for $80$ students, and the table shows a total of 80 votes were counted. It follows that each of the $80$ students voted exactly once. Thus, the probability of selecting a student whose vote for the new mascot was for a lion is $\frac{20}{80}$, or $\frac{1}{4}$.