which is better and safer for my 1 1/2 year old to ride with me?

 

logo a child carrier or bicycle trailer?
Pet Stroller Cat Dog Bicycle Bike Trailer Carrier Pet Supplies New
Pet Stroller Cat Dog Bicycle Bike Trailer Carrier Pet Supplies New
Paypal   US $36.36 		GlideAway 4 Bike Rack Carrier 2 Hitch Mount Receiver Easy Cargo Access
GlideAway 4 Bike Rack Carrier 2 Hitch Mount Receiver Easy Cargo Access
Paypal   US $117.50 		Bell Classic Bicycle Child Carrier
Bell Classic Bicycle Child Carrier
Paypal   US $15.00