Here are the correct sentences that identify changes in education during the High Middle Ages:
- More universities developed.
- An educated social class developed.
The other sentences can be dropped as they do not accurately reflect the broader changes in education during that period:
- Studies focused only on Christianity. (While theology was a major focus, other subjects began to be studied.)
- Students learned in languages other than Latin. (Latin remained the primary language of instruction in most universities during this time.)