In PowerPoint, to add a sound that plays across multiple slides, use: MCQ with Answer and Explanation

Explanation:
Actually Broadcast Slide Show is an option (in older versions). But Present Online replaced it. I'll change: Which is not found under Slide Show tab? Maybe 'Custom Animation'. I'll avoid confusion. I'll ask: Which of the following is NOT a tool on the Slide Show tab? Option D: Custom Animation (that's on Animations tab). So D.

Explanation:
All methods allow copying slides, but Reuse Slides offers the option.

Explanation:
Currency has fixed decimal places and avoids rounding errors. Number can also store money but may have rounding.