The nurse is calculating the estimated date of confinement (EDC) using Nagele's rule for a client whose last menstrual period started on December 1. Which date is most accurate?

Choice A rationale:

Rh incompatibility occurs when an Rh-negative mother is exposed to Rh-positive fetal blood, leading to the development of antibodies against Rh-positive blood cells. In this scenario, the infant of an Rh-negative mother and an Rh-positive father who is heterozygous for the Rh factor (Choice C) is more likely to have Rh incompatibility. This is because there is a higher chance that the fetus will be Rh-positive, and the mother, being Rh-negative, may produce antibodies against the Rh-positive cells of the baby, causing hemolytic disease of the newborn.

Choice B rationale:

If both the mother and the infant are Rh-negative (Choice B), there is no Rh incompatibility, as there is no Rh-positive blood to trigger an immune response in the mother.

Choice D rationale:

If both the mother and the infant are Rh-positive (Choice D), there is also no Rh incompatibility, as there is no Rh-negative blood to cause an immune reaction in the mother.

Choice A rationale:
Kimberly and Amanda sharing clay to each make things represents cooperative play, not parallel play. Cooperative play involves interaction and collaboration between children, whereas parallel play involves children playing side by side without interacting.
Choice B rationale:
Brian playing with his truck next to Kristina playing with her truck demonstrates parallel play. In parallel play, children play independently but alongside others, showing interest in what others are doing but without direct interaction.
Choice C rationale:
Adam playing a board game with Kyle, Steven, and Erich represents cooperative play, not parallel play. Cooperative play involves shared activities and collaboration, while parallel play involves independent activities in proximity to others.
Choice D rationale:
Danielle playing with a music box on her mother's lap is an example of solitary play, where a child plays alone without regard to others. Solitary play is common in younger children and is different from parallel play.