What best describes a functional individual constraint?

What type of plastic is a washing up liquid bottle made of? What is the composition of the powder used by gymnasts? I know that landfills and incinerators hurt the environment. Which one is more dangerous and will trees be able to offset the effects? Which companies manufacture bicycles? What is a short distance runner for tack and field called? What are the most durable bikes available on the market today? How long is 45km on bike? What are the key features and specifications of the Cannondale Rize 5 mountain bike? What is the average price of bikes in the current market? What is the world record pole vault for age 13? Where is Innisbrook golf course located? In engineering how are waste materials transferred stored and disposed of safely? What size kids bike should I buy for my child? What are the benefits of using Shimano compact cranksets for cycling? What can you do in gymnastics on the bar? How many laps a person run a 400m track if he is running 1500M RACE? Does it look awkward for a 15 year old gymnast to be in level 3? What lanes are good to run in track field? Definition of 6 phases in gymnastics? What are the key features and benefits of the Brooks Saddle Flyer, and how does it compare to other saddle options on the market?