Final answer:
The Δ⁺ particle could be an excited state of the proton based on their identical quark composition of uud.
Step-by-step explanation:
To determine whether the Δ⁺ particle could be an excited state of the proton, we need to examine the quark composition of both particles.
The Δ⁺ particle consists of three quarks, while the proton also consists of three quarks.
The quark composition of the Δ⁺ particle can be represented as uud, which is the same as the quark composition of the proton.
Therefore, we can conclude that the Δ⁺ particle could be an excited state of the proton.