Final answer:
The question about the number of schools Andrew Foster established in Africa does not have the correct answer listed; Foster founded 32 schools for the deaf across 13 countries, which is not reflected in the provided options.
Step-by-step explanation:
The main answer to the question about how many schools in Africa Andrew Foster established is not directly provided in the reference information. However, since the student's question is about Andrew Foster specifically, it is important to provide them with accurate historical information. Andrew Foster was an American educator and missionary who became the first African American to graduate from Gallaudet University. He was pioneering in education for the deaf in Africa. Throughout his life, Foster established 32 schools for the deaf across 13 countries in Africa, so none of the options (A) 5, (B) 10, (C) 15, or (D) 20 are correct. His work significantly impacted the education of deaf individuals across the continent, and his legacy continues to be celebrated today.