Question

which reason supports the point that cities are making biking safer? add it to the chart.
point
it’s important for cities to make biking safer, and many cities are finding ways.
reason
bike lanes keep riders separate from cars and people on foot.
reason
curbs, posts, and other barriers keep bikers safe from car traffic.
reason
?
bike boxes let riders cross streets and turn before cars do.
narrow bike lanes stop people from walking in them.
drivers must travel behind bikes along roads.
bikes may go through red lights while cars must stop.

Explanation:

We need to find a reason that supports the point that cities are making biking safer. Let's analyze each option:

• "Bike boxes let riders cross streets and turn before cars do": This gives a way cities design infrastructure to make biking safer (riders can navigate intersections safer by turning/crossing before cars), so it supports the point.
• "Narrow bike lanes stop people from walking in them": Narrow lanes might not be a safety - promoting design (narrow lanes could be dangerous for bikers), and the focus is on stopping pedestrians, not directly on biker safety from traffic or navigation.
• "Drivers must travel behind bikes along roads": This could be unsafe as it might force drivers to follow bikes closely, not a safety - enhancing measure for bikers.
• "Bikes may go through red lights while cars must stop": This is a traffic rule difference, but it doesn't show cities making biking safer (it's more about traffic rules for bikes vs cars, not a city - initiated safety measure like infrastructure changes).

So the correct option is the one about bike boxes.

Answer:

A. Bike boxes let riders cross streets and turn before cars do.