Final answer:
D. 8. The age limit for children who are required to use child safety seats in Texas is under 8 years old and less than 4'9" in height. Adhering to this regulation is important for child safety during car travel.
Step-by-step explanation:
The correct answer to the question is D. 8. In the state of Texas, children under the age of 8 years old and less than 4'9" in height are required to be seated in child safety seats. This requirement is established to ensure the safety of younger children during car travel and is based on the understanding that standard seat belts may not offer sufficient protection for smaller bodies in the event of a crash.
It's important to always follow the guidelines set by the state for child safety seats, considering the ages and heights of the children to determine the appropriate safety equipment. For children ages 0 to 2.5, rear-facing car seats are generally recommended, whereas children ages 2.5 to 6 may use forward-facing car seats, and booster seats are advisable for children older than 6 but who are not yet 4'9" tall or under the age of 8.