As infants, boys and girls

As infants, boys and girls
 
  a. differ noticeably in their displays of emotion.
  b. do not differ much in their displays of emotion.
  c. differ in displays of anger.
  d. have identical temperaments.

Question 2

MONOCULAR is to BINOCULAR as ____ is to ____.
 
  a. DEAFNESS :: HEARING
  b. TRAIN :: AIRPLANE
  c. FLOOD :: DROUGHT
  d. SOLO :: DUET

Question 3

From conception, boys are _____ physically vulnerable than girls to prenatal and perinatal hazards and to the effects of disease.
 
  a. more
  b. less
  c. equally
  d. It is actually difficult to draw a conclusion from current research