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Address Space Layout Randomization (ASLR) is a security technique designed to protect systems by randomizing the memory addresses used by system and application processes. This method enhances security by making it significantly harder for an attacker to predict where specific pieces of code, such as executable binaries, stack, and heap memory, are located in memory.

With ASLR enabled, each time a program is executed, its memory addresses are randomly assigned, which disrupts various types of attacks that rely on knowing the location of specific code or data segments, such as buffer overflow attacks. If an attacker cannot determine the exact memory location where the malicious payload should be injected or where sensitive data is stored, the effectiveness of such attacks is diminished.

The correct answer reflects this core principle of ASLR; by making memory address usage less predictable, it increases the difficulty for attackers to exploit vulnerabilities within the system. This is a proactive measure against exploitation tactics that have traditionally relied on fixed memory addresses.

Understanding the effectiveness of ASLR emphasizes the importance of unpredictability in security measures, helping stakeholders appreciate how such techniques contribute to a more robust security posture.