Question

advances in which area are critical in attaining the age of viability? neurological functioning sensory development kidney functioning weight gain

Explanation:

The age of viability refers to the point at which a fetus can survive outside the womb. Adequate weight gain is crucial as it indicates overall growth and development, and a fetus needs to reach a certain weight - typically around 500 - 1000 grams or more - to have a better chance of survival outside the uterus. Neurological, sensory, and kidney functions are important, but weight gain is a more comprehensive indicator related to overall viability.

Answer:

weight gain