The blood vessel itself, which is more than just an interior lining but also has muscle in it to help it vasoconstrict or vasodilate, is at the blank level of organization

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations