Answer:
D. Attracts
Step-by-step explanation:
The word that could replace the words appeals to without changing the meaning of the sentence is attracts.
By saying that the mentioned type of education appeals to students for whom English is a second language and native English speakers who want to gain fluency in another language means that those two groups of students are the ones who choose this type of education. This means that they are attracted to it.
The rest of the options would more or less change the meaning of the sentence, which is why they are incorrect.