Which theory proposes that children acquire gender identity between ages 2-3 and gender permanence between ages 5-7?

As described in Chapter 4, the various brain structures and other biological factors operate according to a feedback loop in order to regulate the menstrual cycle. Which of the following students provides the best description of this feedback loop?

a. Dakwan: "When the level of a hormone is too high, a structure in the brain is signaled to inhibit hormone production; when the level is too low, the brain structure is signaled to produce more hormones.". b. Angus: "When the hypothalamus is signaled, a follicle in the hypothalamus releases an egg; when the hypothalamus is not signaled, the follicle does not release the egg.". c. Sandi: "When a female reaches puberty, her endometrium signals the pituitary gland, which varies in size, depending on the menstrual cycle; for instance, the pituitary gland is largest at the time of ovulation.". d. Adriana: "When a female has her period, the menstrual flow signals the hypothalamus, which inhibits the development of the follicle.".

If you know that achievement is positively correlated with life satisfaction, then you can conclude that ____

a. one of two things MUST be true: either achievement causes life satisfaction OR life satisfaction causes achievement b. a third variable (such as commitment or passion) MUST cause both achievement and life satisfaction c. as achievement increases, happiness also increases d. the relationship between the two variables must be statistically significant