When inspecting EMI gaskets, technicians must ensure the gasket is ___ to prevent moisture intrusion.

The correct answer focuses on the importance of ensuring that EMI (Electromagnetic Interference) gaskets are properly bonded to their mounting surfaces. This bonding is crucial to creating a continuous and effective seal that prevents moisture and contaminants from infiltrating electronic compartments. If an EMI gasket is not sufficiently bonded, gaps can form that allow moisture to enter, which may lead to corrosion, electrical failures, or degradation of sensitive electronic components.

The other choices, while relevant in different contexts, do not emphasize the critical aspect of adhesion needed for effective moisture protection. For instance, while a gasket may be sufficiently pressed against a surface, if it is not bonded, it may lose contact over time or under vibration, leading to the same risks. Similarly, overlapping gaskets can sometimes be used in specific designs, but they are not universally applicable and do not inherently ensure moisture intrusion prevention. Sealing is also important but typically refers to the entire assembly rather than the specific aspect of bonding necessary to maintain a reliable barrier against moisture. Thus, bonding is the most pertinent requirement when focusing on the prevention of moisture intrusion in EMI gaskets.