What are the three main conditions that influence the range of a wireless local area network (WLAN)?

The correct answer highlights three crucial factors that significantly impact the range of a wireless local area network (WLAN):

1. Transmission Power: This refers to the power level at which the wireless signal is emitted by the access point. Higher transmission power generally increases the range of the network because the signal can travel further before it diminishes.

2. Antenna Type and Location: Different types of antennas (such as omnidirectional or directional antennas) have varying characteristics that affect signal propagation. The physical location of the antenna also plays a vital role; placement height, orientation, and obstructions can either enhance or limit the coverage area.

3. Environment: The surrounding environment is critical in determining the effective range of a WLAN. Factors such as physical barriers (walls, furniture), the presence of electronic devices that can cause interference, and even weather conditions can influence how well the wireless signal travels.

Understanding these factors is essential for designing effective WLANs, ensuring they meet the connectivity needs in a given area. Other answer choices mention conditions that do not directly affect the range in the way that transmission power, antenna characteristics, and environmental factors do.