Which principle emphasizes the effective use of terrain to minimize exposure while engaging a target?

The principle that emphasizes the effective use of terrain to minimize exposure while engaging a target is defilade. Defilade refers to positioning yourself or your weapon in a way that uses the natural features of the landscape, such as hills, walls, or other obstacles, to shield yourself from enemy fire while still allowing you to engage the target. This is crucial in tactical situations, as it provides cover and protection, reducing the risk to personnel while maximizing their ability to deliver accurate fire. Utilizing defilade effectively allows forces to take advantage of the environment, enhancing survivability and tactical advantage during engagements.