The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
After reading this document, the practice of Hinduism is the Buddha
criticizing is "Sadhana."
This is an ancient spiritual practice that tries to make people or followers detach from material things that do not serve the spirit. Through Sadhana, followers strive to reach perfection is all levels of life. Also through meditation, the followers of this practice try to defeat the ego and reach spiritual heights to constantly grow. The discipline is practice alone, so people can really focus on their own growth.