Multi-select problem: How does the next paragraph end?

How to buy a convertible car seat
Research the safety features of different convertible car seats you are considering.
Make sure the models you look at have 5-point harnesses, as this ensures a better fit which is safer for the child. Check the straps to make sure they are wide and do not easily twist.

Choose your answer from:
a). The buckle face of the model should be correct to avoid sharp straps. The space above and below the buckle face is the most important consideration.;
b). Check the overall seat area of the car. If the seats are made of plastic, check to make sure this area is near the door handles or the dashboard.;
c). Twisted straps reduce the area of strap that would restrain a child during a crash, diminishing the seat's effectiveness. Look for convertible car seats that have front harness adjustment.;
d). If the straps are not wide enough to roll under your child's full body weight, they may be too thick or restrictive. Some models are designed to be resting over their owners lower back from mid-sized.;
c).