Are used to quickly create a presentation by providing predesigned styles and layouts as well as suggested content based on the type you choose

The answer is "templates".

While there are evident advantages to utilizing templates, some may not be sold on the thought just in light of the fact that most free introduction formats leave a considerable measure to be wanted outline astute. This is the reason a few people still favor planning slides sans preparation as opposed to working off of a format.  

Outlining slides starting with no outside help is a tedious procedure. On the off chance that you have outline abilities, at that point maybe you can without much of a stretch make your slides. Be that as it may, in the event that you don't and you rely upon other individuals' plans for motivation, at that point you might invest decidedly a lot of energy considering hues, text styles, and other outline components.  

answer///supply is elastic, and demand is inelastic;