Which of the following is not a PowerPoint slide size?

Which of the following is not a PowerPoint slide size?

1. Standard (4:3)
2. Widescreen (16:9)
3. Square (1:1)
4. Portrait (9:16)

Answer: d) Portrait (9:16).

Explanation: PowerPoint slide sizes are Standard (4:3), Widescreen (16:9), and Square (1:1).