Final answer:
The collection of all slides in a presentation is referred to as a deck, similar to a deck of cards where each slide is like an individual card.
Step-by-step explanation:
The term defined as all slides within a presentation is a) Deck. In the context of presentation software such as Microsoft PowerPoint or Slides, the collection of slides that make up the entire presentation is often referred to as a deck. This term originates from the analogy of a deck of cards, where each slide represents an individual card in the deck.