Which Greek letter corresponds to the answer for "Θ"?

The Greek letter that corresponds to "Θ" is Theta. In the Greek alphabet, Theta is the eighth letter and is represented by the symbol "Θ" in uppercase and "θ" in lowercase. It holds significance in various mathematical and scientific contexts, often representing angles or variables in trigonometry and physics.

The other letters—Mu, Lambda, and Nu—represent different symbols in the Greek alphabet. Mu corresponds to "Μ," Lambda corresponds to "Λ," and Nu corresponds to "Ν." Each of these letters has its unique representations and uses, but none correspond to the symbol "Θ." Therefore, Theta is the correct choice.