Its either A) four (more likely) or D)two.
I wish I can help not because I want be on brainliest
The correct answer of the given question above would be the second option. A noun clause is a dependent clause that functions as a noun and is usually introduced by the words that, how, whatever, what, when, where, whether, which, whichever, who, whoever, whom, whomever and why. Therefore, the answer that identifies the noun clause is this: <span>How the Aztecs made their astronomical calculations. </span>
