The giddy, dancing sunbeams laugh riotously in field and street; birds carol their sweet twitterings everywhere, and the heavy perfume of flowers scents the golden atmosphere with inspiring fragrance. which is the best evidence that “giddy” means “light-headed or dizzy”?

From the whole passage, we get the image that sunbeams move around in a seemingly random way that reminds us of a person who is having fun. Personification is used heavily to describe the movement of sunbeams as those of a joyous, uncontrolled dance (dancing, laugh riotously), from which we can infer that the word "giddy" is a part of this personification as well.

B description of the sun beams

Explanation:

right on edg

personaly i think it is a hope this !