Final answer:
The size of the sign required to be displayed near the register concerning tobacco sales may vary depending on local laws and regulations. They should be large enough to be easily visible and readable by customers and often include age restrictions, health warnings, and tobacco control helpline numbers.
Step-by-step explanation:
The size of the sign required to be displayed near the register concerning tobacco sales may vary depending on the specific laws and regulations of each country, state, or region. Generally, these signs need to be large enough to be easily visible and readable by customers. They often include information such as age restrictions, health warnings, and tobacco control helpline numbers. Retailers should consult local laws and regulations to determine the exact size requirements for these signs.