Study of a subject of study; a branch of knowledge.

• A. -ology
• B. -static
• C. -anti-
• D. -tri-

Answer: (A)

The concept being tested is how to form a term that means “the study of” or “the science of” a subject. The best fit is the suffix that denotes a field of study. -ology comes from Greek -logia and is used to name disciplines and areas of knowledge, turning a subject into its study or science. That’s why it matches the phrase “Study of a subject of study; a branch of knowledge”—bi ology, psychology, geology, cardiology, and so on all mean the study of life, the mind, the Earth, the heart, respectively.

The other options don’t convey this meaning. -static is not a suffix used to form fields of study; it relates to a state of being or something that is static. -anti- is a prefix meaning against, and -tri- is a prefix meaning three, neither of which adds the sense of “the study of” to a root.