Which two actions reduce an AP's coverage area?

Reducing an AP's transmit power directly lowers the signal strength, thereby decreasing the physical distance the signal can effectively cover. Increasing the minimum mandatory data rate means client devices must maintain a stronger signal to communicate with the AP. Devices further away, experiencing weaker signals, will fall below this minimum threshold and be unable to connect, effectively shrinking the coverage cell. Reducing channel width primarily affects throughput, not coverage distance. Enabling Fastlane is a QoS feature for Apple devices and doesn't directly alter coverage. Disabling 2.4 GHz and using only 5 GHz would generally reduce coverage, as 5 GHz signals have less range than 2.4 GHz, but this option implies a change in band usage rather than a direct reduction of an existing AP's coverage area within a specific band.