Correct option (D) H2S, H3O+, HS–
Explanation:
A Brönsted acid is any species that can donate a proton. Notice how H2S gives one of it’s protons to water in the first equation. The HS– also gives it’s proton to water in the second equation. Finally, the H3O+ is also a Brönsted acid since it is the conjugate acid formed by when the water molecules accept a proton.