According to Kenoyer, the possible reason for the amazing degree of standardization in Harappan crafts is the state control. This means that the government or ruling authority governed and regulated the production of crafts in the Harappan civilization. The state likely had control over the raw materials, markets, and the training of craftsmen.

Option 1, availability of raw materials at the local level, might have been a contributing factor, as having easy access to the necessary materials would facilitate the production process. However, it is the state control that is considered the primary reason for standardization.

Option 2, centralized markets for crafts, is also plausible, as having a centralized marketplace could help ensure that the crafts produced adhere to a certain standard. However, it is the state control that is believed to have played a bigger role in the standardization of Harappan crafts.

Option 3, specialized training centers for craftsmen, may have been present in the Harappan civilization, but it is not mentioned as the main reason for the standardization of crafts.

It is important to note that while the given answer is generally correct, there may be other factors contributing to the standardization of Harappan crafts that were not mentioned.