How did Feynman's theory of quantum electrodynamics improve upon earlier theories? by incorporating one theory into another to explain the interconnection of electricity, magnetism, and light,

by explaining how different properties can change function and form based on their relationships with other properties

by replacing quantum mechanics with a totally different theory about how electricity and magnetism together create light

by identifying additional forces in nature, electricity and magnetism, that work in conjunction with the forces of gravity

the answer is:

b) to show the progression of inventions that took place in the bicycling industry.

hope it !

now, of course, the quality and the seasonability of these winter dreams varied, but the stuff of them remained.   they persuaded dexter several years later to pass up a business course at the state university—his father, prospering now, would have paid his way—for the precarious advantage of attending an older and more famous university in the east, where he was bothered by his scanty funds. but do not get the impression, because his winter dreams happened to be concerned at first with musings on the rich, that there was anything merely snobbish in the boy. he wanted not association with glittering things and glittering people—he wanted the glittering things themselves. often he reached out for the best without knowing why he wanted it—and sometimes he ran up against the mysterious denials and prohibitions in which life indulges.

there you go thats what we are missing