Translation:The philosopher used the dialectic method.
As a couple others have commented, my answer should be accepted- I wrote ο φιλόσοφος χρησιμοποίησει τη διαλεκτική μέθοδο and it was marked incorrect. (Yes- I realize I added one extra letter, but that is not really fair- χρησιμοποίησε is a very hard word to spell correctly, so some leniency should be shown- the word has 3 different ways of representing the /i/ sound!)
Here's how to report. Go to the bottom of the exercise page where you'll see REPORT Click on that:
Then choose what you want to REPORT: (You'll see these to choose from.)
-The audio does not sound correct.
-The dictionary hints on hover are wrong or missing.
-The Greek sentence is unnatural or has an error. -The "Correct solution" is unnatural or has an error.
-My answer should be accepted. This is the one you should click on if your translation was not accepted.
After choosing the REPORT you want to make you should post on the comment page.