An excessive range of joint motion

If bleeding occurs intraperitoneally, the signs of rebound, guarding and rigidity may not be manifested as well in a pregnant female due to:

a. the loss of uterine tone and the development of the fetus b. gradual stretching of the abdominal wall, along with hormonal changes c. hypertension and the associated incidence of abruptio placenta d. the compression of the inferior vena cava, cutting of preload to the heart

One inch is approximately 2.54 ________

Fill in the blank with correct word.