According to the WELL v2™ feature L03: Circadian Lighting Design, the project must provide lighting that supports the circadian system by delivering appropriate light intensity, spectrum, timing and duration1. Circadian lighting design can help regulate the sleep and wake rhythm by providing bright light during the day and dim light at night, which can synchronize the internal clock with the natural day-night cycle2. Exposure to bright light during the day can enhance alertness, mood and cognitive performance, while exposure to dim light at night can promote melatonin secretion and sleep quality2. Option A is incorrect, as tobacco cessation is not directly related to sleep and wake rhythm, although smoking can have negative effects on sleep and health3. Option C is incorrect, as restorative programming is not directly related to sleep and wake rhythm, although it can provide opportunities for relaxation and stress relief. Option D is incorrect, as ergonomic workstation design is not directly related to sleep and wake rhythm, although it can improve comfort and posture.

References: = Standard | WELL V2 - Feature L03: Circadian Lighting Design Circadian lighting design | WELL Standard - wellcertified.com How Smoking Affects Sleep Quality | Sleep Foundation [Standard | WELL V2] - Feature M08: Restorative Programming [Standard | WELL V2] - Feature V02: Ergonomic Workstation Design