Which suffix indicates "growth"?

The suffix that indicates "growth" is indeed found in the option that includes "-plasia." This suffix is derived from the Greek word "plasis," meaning formation or development, and is commonly used in medical terminology to describe conditions involving growth or multiplication of cells. For example, "hyperplasia" refers to an increase in the number of cells, whereas "hypoplasia" indicates inadequate or reduced cell number or tissue development.

This understanding of "-plasia" is essential in various medical contexts, such as pathology, where changes in cell growth patterns can indicate disease processes. Therefore, recognizing this suffix allows professionals to interpret terms related to cellular growth accurately.

The other options do not denote "growth" specifically; for instance, "-in" typically denotes the presence of a substance (like a protein), "-sclerosis" often refers to hardening (as in "atherosclerosis"), and "-trophy" is used to describe changes in size or nourishment of tissues, but not necessarily growth per se in the way that "-plasia" does. This clear distinction is why "-plasia" is the correct choice for indicating growth.