Restrictive monetary policy since the mortgage debt crisis Multiple Choice
has been aggressively implemented to stop inflationary pressure fueled by quantitative easing.
has raised interest rates back to pre-financial crisis levels.
has mainly been attempts to "normalize" monetary policy by paying interest on excess reserves and starting QT, quantitative tightening.
has been limited by the zero lower bound problem.

The bystander effect  for some reason my history teacher was talking about this 

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .

the correct answer is moro reflex. this is usually witnessed in infants normally up to the age of 4-5 months (in some cases maybe more)  

it is caused by a sudden loss of support that makes the baby feel as if he or she is falling or is going to fall and hence the flinging of the arms and crying.