Final answer:
The word part that indicates a disease or symptom among the given options is '-oma,' which denotes tumors or cancerous growths.
Step-by-step explanation:
The word part that indicates a disease or symptom in the options provided is -oma. This suffix is commonly used in medical terms to denote tumors and can be found in words such as carcinoma (a type of cancer) or melanoma (a type of skin tumor). For example, osteoma would refer to a bone tumor, emphasizing how the suffix relates to diseases. On the other hand, the remaining options don't specifically indicate a disease or symptom: 'oste' refers to bone, 'card' to heart, and '-ectomy' is a suffix indicating surgical removal.