Answer:
Wearing bright colors help drivers see you.
Explanation:
I say the last one because were dull colors wouldn't really get the drivers attention, but unlike bright colors they can see you because colors such as yellow can definitely illuminate the drivers eyes.
Vaccinations were first used in the year 1796.
Hold your breath to find your target heart rate, then be calm until ur heart beat slows until it's the slowest, that's ur resting heart rate
