Answer:
An overhead projector: requires slides to project images
A laptop: requires an external monitor to project high-resolution images
A computer: requires a CD-ROM drive to run presentation CDs
An external monitor: requires a port to connect to the laptop
Explanation:
The correct pair has been formed above. An overhead projector requires the slides for projecting images. A Laptop for projecting high-resolution images requires an external monitor. And a computer requires a CD-ROM drive for running presentation CDs, and an external monitor requires a port to a port which can be an HDMI port to connect to a laptop.
