Question

the wave is a rock formation located in arizona. it is made of navajo sandstone, which formed from layers of sand. the stripes in the rock show sand layers that were pressed together to form rock. the wave is being eroded by wind. over thousands of years, erosion has shaped the rock into the wave - like shapes you see in the picture. what type of rock is the wave made of? metamorphic sedimentary igneous

Explanation:

文中提到The Wave由纳瓦霍砂岩（Navajo Sandstone）构成，砂岩是由沙层堆积压实形成，这符合沉积岩（sedimentary rock）的形成特征。沉积岩是由沉积物经过压实、胶结等作用形成。

Answer:

B. sedimentary