Which of the following has a drawing area dimension of 42 X 32?

The drawing area dimension of 42 x 32 inches is characteristic of "Mechanical E." This size is part of a series of mechanical drawing sheets, which are standardized in the engineering and architectural fields. Mechanical E specifically corresponds to a 42 x 30 inch format, which is typically used for large-scale mechanical drawings that require substantial detail and room to present extensive information.

In contrast, the other options have different dimensions and formats, which do not fit the 42 x 32 specifications. "Mechanical B" generally corresponds to a 11 x 17 inch format, "Metric A1" corresponds to 594 x 841 mm (approximately 23.4 x 33.1 inches), and "Metric A0" measures 841 x 1189 mm (approximately 33.1 x 46.8 inches). These variations reflect their designed use cases in different engineering drawings, but they do not align with the provided dimension of 42 x 32 inches. Therefore, "Mechanical E" is the correct choice based on its standard size.