Final answer:
Any significant deviations in a six-month-old infant's temperature, gross motor skills, weight, and feeding habits should be reported, as these could indicate health concerns. Steady weight gain and the appearance of teething are typical developmental milestones for a six-month-old.
Step-by-step explanation:
A nurse collecting data from a six-month-old infant should report any findings that are significantly outside the expected developmental milestones and growth patterns. Important factors include the infant's temperature, gross motor skills, and feeding habits. A rapid gain in weight or a failure to gain weight might signal underlying health issues or feeding problems.
Infant development milestones vary, but by six months, babies generally start teething and may sit with support. Weight gain should be steady since a healthy infant normally triples their birth weight by the first birthday. The infant mortality rate indicates the number of deaths of infants under one year old per 1,000 live births and is a critical measure of a population's health.