What part of a speaker cancels out the magnetic interference and keeps the interference away from other devices?

To ensure that the largest element of the priority queue is always the first element of the queue, we can implement priority queues as ____.

A. piles B. stacks C. trees D. heaps

To change fill colors, textures and fonts for your chart, click the Chart ____ button.

A. Styles B. Layout C. Gallery D. Themes