When suffixes are written as separate components, how do they begin?

When suffixes are written as separate components, they begin with a hyphen. This typographical convention is used to clearly indicate the connection between the root word and the suffix. The hyphen serves to distinguish the suffix from the root, ensuring that it is recognized as an integral part of the word while maintaining clarity in its usage.

For example, in medical terminology, you might see "cardio-" (relating to the heart) combined with a suffix like "-logy" (the study of) presented as "cardio-logy." This structure assists in understanding the specific meanings conveyed through the combined terms. The other options do not convey this relationship effectively in medical language, making the use of a hyphen the most appropriate choice in this context.