Analyze the relationship between 'mobility' and 'scooter' within the context of the input sentence.
Options: founded by, product/material produced, stock exchange, business division

I need one for next year, and my vote goes for the only electric one I came across – made out of a mobility scooter bought on eBay and adorned with flowers, blue and green paint and a caravan top to keep the sun off the children.
product/material produced