Which of the following is NOT a method to create a solid layer in After Effects?

Creating a solid layer in Adobe After Effects is a straightforward process, and the correct method involves accessing the appropriate menu pathways within the software. The option that mentions "Layer/New/Shape" is significant here because it refers to creating a shape layer, not a solid layer. Shape layers serve a different function in After Effects, allowing for the design of vector-based graphics rather than a simple colored solid that can be used as a background or for masking effects.

The methods that correctly create a solid layer involve navigating through the "Layer" menu and selecting "New" followed by "Solid," which allows you to generate a solid color layer that can be customized in terms of color and size. This solid can then be used in various ways, such as a background element or an adjustment layer.

Understanding the distinctions between these different types of layers is crucial for effective workflow in After Effects. Solid layers and shape layers have different properties and uses, which is why recognizing the correct menu options is important. Therefore, knowing which options lead to the creation of solids versus shapes directly impacts how video compositions are assembled.