This ても means 'even if' or 'even though'. It introduces a condition that normally would prevent something, but the result still happens or is still true. For example, if you say 雨が降っても行く, you mean that rain is a potential obstacle, but you will go anyway. The pattern is used to emphasize that the result is unaffected by the condition. You can use it with verbs, adjectives, and nouns. With verbs, use the て-form: 食べて + も = 食べても. With い-adjectives, change い to くて and add も: 高くて + も = 高くても. With な-adjectives and nouns, just add でも: 静かでも, 学生でも. Note that でも (with で from だ) is also used as a separate particle meaning 'but' or 'or something', but here it is part of this conditional pattern. This ても is common in both speaking and writing, and it is polite enough for most situations. It is a key pattern for expressing concession.