You can reset your multiple choice history or flash cards in your profile settings. At this time there is no option to reset specific lectures. This action will reset all questions in the course.

App:

Select the profile icon at the top right. You will now see the options to reset your multiple choice, flash cards, & lectures at the bottom of your screen.

Website:

Select the profile icon at the top right. Next select 'profile'. You will now see the option to reset your multiple choice, flash cards, & lectures at the bottom of your screen.