Final answer:
The requirement involving the placement of light switches, electrical outlets, and thermostats at accessible locations is generally based on standards such as the ADA, specifying heights for these controls to be accessible. The exact requirement number (from the provided options) can be determined by referencing the specific guidelines or codes being studied.
Step-by-step explanation:
Accessibility Requirements for Environmental Controls
Accessibility requirements for environmental controls, such as light switches, electrical outlets, thermostats, and other environmental controls, are addressed in various standards and codes. In the United States, one of the most commonly referenced standards is the Americans with Disabilities Act (ADA). While the question does not specify which set of requirements we are referring to, it seems to resemble the formatting of ADA or similar building codes, which outline various numbered requirements for accessibility.
Based on common accessibility standards, these environmental controls must be placed in locations that can be easily reached by individuals in wheelchairs or with other mobility impairments. Typically, this means that light switches and thermostats should be no higher than 48 inches above the floor, and outlets should be no lower than 15 inches from the floor. Without further context, it's not possible to definitively match these accessibility guidelines to the options given (REQUIREMENT 5, REQUIREMENT 2, REQUIREMENT 3, REQUIREMENT 4).
However, if this question is sourced from a specific code or set of guidelines, the student should reference those materials directly to find the correct answer.