Answer:
d. fever.
Step-by-step explanation:
Probably the child has a fever.
When the organism is attacked by an external agent or a disease of the internal organs, the thermostat can raise the temperature two or three degrees above usual values, which characterizes fever. In fact, fever is not a disease; It is a reaction of the body against some anomaly. Nor is it necessarily an evil. In infections, for example, it helps the defense system get rid of the offending agent.