Jun 23, 2020 - 02:54 AM
You're right that in this question the most correct verb would be "ansehen".
Here we're using "sehen" because although it's not the most natural, it's not wrong, so everybody would understand you. Also, "ansehen" hasn't been taught yet at this point in our program, as we considered verbs with particles are quite hard to handle for beginners, and preferred to focus on other crucial elements first such as declensions, sentence structures and conjugations (only in level 5).
Good on you for knowing about this verb and the difference with "sehen", and Vielen Dank for sending us your feedback, keep it up!