Respuesta :
you dont have your choices listed but on a pc it would be control panel/appearance/screen resolution
Answer: You can find and select the size: 800 x 600 in the your PC's Screen Resolution.
Explanation:
Not Win 10: Open Screen Resolution by clicking the Start button , clicking Control Panel, and then, under Appearance and Personalization, clicking Adjust screen resolution. Click the drop-down list next to Resolution, move the slider to the resolution you want, and then click Apply.
Win 10: Right click and choose Display Setting.