Inorganic nutrients can contain which of the following?

Inorganic nutrients are typically defined as substances that do not primarily consist of carbon-hydrogen (C-H) bonds. Unlike organic nutrients, which are based on carbon and usually include hydrogen (and often oxygen), inorganic nutrients are generally comprised of minerals or elements such as nitrogen, phosphorus, potassium, calcium, magnesium, and iron, among others. These elements play crucial roles in biological processes and are essential for many metabolic functions but do not include carbon and hydrogen in the way organic compounds do.

Therefore, the reasoning behind the selection of "neither carbon nor hydrogen" as the correct answer lies in the fundamental classification of inorganic compounds. They lack the complex structures associated with organic molecules and are simpler in composition, confirming that they do not contain both carbon and hydrogen.