Question

greg is giving a slide show presentation to a large audience. how might a laser best help him with the presentation?
he can use the laser to enlarge images on the slides.
he can use the laser to point to specific information on the slides.
he can use the laser to scan and record information about the slides.
he can use the laser to make the images more clear.

Explanation:

A laser pointer is commonly used in presentations to draw attention to specific parts of a slide. Enlarging images (usually done by projector settings), scanning/recording (not typical for a simple presentation laser use), or making images clearer (again, more related to projector or slide quality) are not the main functions. The key is that a laser can point to specific info.

Answer:

He can use the laser to point to specific information on the slides.