Because commercial maps are usually too cluttered, the best maps used for visual aids are usually those drawn by the speaker.
a) Commercial maps often contain excessive clutter, making speaker-drawn maps the best choice for visual aids.
b) Speaker-drawn maps, despite being less cluttered, are not suitable for presentations compared to commercial maps.
c) Commercial maps and speaker-drawn maps are equally cluttered and effective as visual aids in presentations.
d) Speaker-drawn maps and commercial maps have their distinct clutter issues, making both unsuitable for presentations.
