Final answer:
To break a fever means to reduce a fever. Option c is correct among the given options.
Step-by-step explanation:
The phrase 'to break a fever' means to reduce a fever.
When someone has a fever, their body temperature is higher than normal. Breaking a fever refers to taking steps to lower the body temperature and help the body recover from the sickness or infection causing the fever.
Methods to break a fever can include taking over-the-counter medications like acetaminophen or ibuprofen, drinking plenty of fluids, using a cool compress, and resting.
Option c is correct among the given options.