The figure below shows the change in demand for Commodity X which is a normal good. Use it to answer the question that follows. Which of the following caused the change in demand from D\(_{1}\) D\(_{1}\) to D\(_{2}\)D\(_{2}\)

The figure below shows the change in demand for Commodity X which is a normal good. Use it to answer the question that follows.

Which of the following caused the change in demand from D\(_{1}\) D\(_{1}\) to D\(_{2}\)D\(_{2}\)