Question

sort the words according to the meanings of their shared roots. sedative cardiology cardiogram sedentary cardiac sedan heart sit; seat

Explanation:

The root "cardi -" relates to the heart. Cardiology (the study of the heart), cardiogram (a record of the heart's activity), and cardiac (pertaining to the heart) belong to the "heart" category. The root "sed -" or "sid -" means sit or seat. Sedative (which makes one calm and sit - like in a relaxed state), sedentary (inactive, sitting a lot), and sedan (a type of car with seats) belong to the "sit; seat" category.

Answer:

heart: cardiology, cardiogram, cardiac
sit; seat: sedative, sedentary, sedan