The behavior sequence resulting from the actions of a sensory neuron, a connector neuron, a motor neuron, and an effector cell is a(n)

After the child's vocabulary has reached about 50 expressed words, the vocabulary increases by approximately ______ words per month

25–50 50–100 100–125 125–150

Of the following, which is the most accurate statement?

a. There is no risk associated with fetal testing. b. Although there is some risk with fetal testing, it is sometimes considered necessary. c. Because of risk, fetal testing should not be done. d. The risk in fetal testing is to the mother, not the fetus.