SAT Question affb2315: Inference From Sample Statistics And Margin Of Error answer and explanation with Desmos solution

Choice A is correct. It's given that $20\%$ of the students surveyed responded that they intend to enroll in the study program. Therefore, the proportion of students in Spanish club who intend to enroll in the study program, based on the survey, is $0.20$. Since there are $55$ total students in Spanish club, the best estimate for the total number of these students who intend to enroll in the study program is $55\left(0.20\right)$, or $11$.