Choose the correct word from the given options as one word substitution for the given phrase:
An instrument that records heart's action.
Choose the correct word from the given options as one word substitution for the given phrase:
An instrument that records heart's action.
Solution
✅ Correct Option: 1
The suffix -graph denotes the instrument that records, while -gram denotes the record produced. So a cardiograph is the instrument that records the heart's action, and a cardiogram is the tracing it produces. "Cardiac" is an adjective and "cartography" is map-making.
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