Which suffix indicates something pertaining to a field or condition?

The suffix that indicates something pertaining to a field or condition is commonly known as "-ic." This suffix is used in medical terminology to describe relating to a particular state or condition, especially in fields such as medicine and biology. For example, the term "cardiac" pertains to the heart, emphasizing its connection to a specific field of medicine.

The other suffixes listed have different meanings: "-atic" also indicates pertaining to but is less commonly used in medical terminology than "-ic." "-logist" refers to a specialist in a certain field (such as a cardiologist for heart conditions) rather than a descriptor of that field itself. "-ology" indicates the study of a certain subject (such as cardiology, the study of the heart) rather than something that pertains to it. Therefore, "-ic" is the best choice for denoting something related to a field or condition in medical terminology.