Final answer:
In 'To Kill a Mockingbird,' the one bright spot in the Ewells' yard is the colorful array of geraniums cared for by Mayella Ewell.
Step-by-step explanation:
In Harper Lee's novel To Kill a Mockingbird, the one bright spot in the Ewells' yard that stands out amidst their squalor and poverty is the burst of color from the geraniums. These flowers are cared for by Mayella Ewell, and they represent a small touch of beauty and care in an otherwise bleak environment. It's Mayella's attempt to bring some joy and normalcy to her difficult life situation.