Which weed has similarities to clover and features yellow flowers?

Oxalis, often referred to as wood sorrel or yellow sorrel, is the weed that bears similarities to clover in terms of leaf shape and growth habit. The leaves of Oxalis typically consist of three leaflets, reminiscent of clover's trifoliate leaves. Additionally, Oxalis produces distinct yellow flowers that usually bloom in clusters, adding to its identification alongside clover. This makes Oxalis the best answer for the question, as its appearance aligns closely with the characteristics described.

In contrast, the other options present different features: Dock is known for its broad leaves and lack of flowering resemblance to clover; Dandelions are distinguishable by their jagged leaves and prominent flat yellow flowers that are not similar to clover's structure; and Chickweed possesses small white flowers and a different leaf morphology, which do not parallel clover or yellow flowers. This context helps clarify why Oxalis stands out as the correct choice.