Concept:Tawhid means the oneness of Allah. Its three accepted aspects are Rububiyyah, Uluhiyyah, and Asma' wasiffat.Explanation:Rububiyyah refers to Allah as the sole Lord and Sustainer.Uluhiyyah refers to worshipping Allah alone.Asma' wasiffat refers to Allah's names and attributes.Shirk means associating partners with Allah. It directly contradicts Tawhid.Therefore, Shirk is not an aspect of Tawhid; it is the opposite of it.Answer:B. Shirk