Which of the following best describes the process of isolation in a tactical sense?

The process of isolation in a tactical sense primarily refers to the prevention of enemy contact. Isolation involves creating a situation in which enemy forces are unable to communicate, reinforce, or resupply effectively. This tactic disrupts the enemy's operational capability and diminishes their effectiveness on the battlefield.

Preventing enemy contact ensures that the opposing force is cut off from vital information and assistance, leading to a strategic advantage for the isolating force. By maintaining this isolation, friendly forces can engage and defeat enemy units in detail without the menace of reinforcements or external support. This concept is a fundamental element in military strategy and operational planning that aims to diminish the enemy's strength and morale.

Other options mention key operational elements but do not align as closely with the specific concept of isolation. For instance, consolidation of forces pertains to bringing together friendly units for better coordination, establishing a secure perimeter focuses on safeguarding an area rather than isolating the enemy, and cutting off a supply line is a component of isolation but does not encompass the full scope of preventing enemy contact across various domains.