Which psychologist advanced the theory that a "designed culture" based on positive reinforcement could encourage desirable behavior?

From a biological perspective, women should try to conceive before age ______ and men before age ______

20; 30 30; 40 40; 50 50; 60

MacDonald's has established a network of "Ronald McDonald" houses near major hospitals so that families of very ill children will have a place to stay while visiting their ill child. This charity is best considered to be an example of:

a. hospice care b. palliative care c. bereavement assistance d. grief work