Final answer:
Controlled access zones are indeed used to limit entry and ensure the safety of workers in hazardous environments, making the statement true. These zones are important for designating specific areas for work and conservation efforts.
Step-by-step explanation:
The statement 'Controlled access zones are used to control the workers within the access zone' is True. Controlled access zones are typically used in construction and other hazardous work environments to prevent unauthorized access and ensure the safety of workers. These zones limit entry, extraction, and use of the designated area. The primary purpose of these zones is not to control the workers per se but to designate areas where only authorized personnel may enter because of safety concerns surrounding a particular task or operation being conducted in that zone.
In the context of environmental conservation, controlled access zones may also be set up to limit entry to and use of designated areas, particularly to protect local wildlife or natural resources, ensuring they are not overused or harmed.