To determine how many students can choose Spanish, we need to consider the information provided. However, there isn't a clear ratio or percentage given in your question.
Assuming that no percentage has been provided and that we need to select one of the responses, we can go by the answers given:
- 213 students
- 283 students
- 425 students
- 638 students
Without additional information on the percentage or factors influencing the choice of Spanish, it's not possible to accurately determine how many of the 850 students can choose Spanish.
If this is part of a larger context or if there's a specific percentage or ratio intended to guide us, please provide that additional detail.