Vamos analisar cada alternativa para identificar onde o futuro com "going to" está empregado corretamente: A) My sister and I are going to study at Uniasselvi. - Correto! Esta frase usa "going to" de forma adequada para indicar uma intenção futura. B) Janice is going not to organize her schedule. - Incorreto. A forma correta seria "Janice is not going to organize her schedule." C) Jorge and Janice is going to work tomorrow. - Incorreto. O sujeito "Jorge and Janice" é plural, então a forma correta seria "Jorge and Janice are going to work tomorrow." D) We aren’t go to plan our activities together. - Incorreto. A forma correta seria "We aren’t going to plan our activities together." Portanto, a alternativa correta é: A) My sister and I are going to study at Uniasselvi.