Using index cards will improve a presentation because

Index cards will improve a presentation because it will look as if you have planned out your presentation and the index cards will hold important information you might need to say

Index cards will improve a presentation because index cards are note cards saying information that you need to or will speak or remember because when you go to present you won't get tongue tied and say the wrong thing at the wrong time and you won't get information wrong because you will know what to say using the Index Cards