What is the most immediate concern regarding estelle’s hematocrit?

(a) it is decreased and there might be internal bleeding from the surgery.

(b) it is normal and there are no concerns with it.

(c) it is elevated, suggesting she is dehydrated.

(d) it is decreased and she might have kidney damage and be losing erythrocytes in her urine.

(A) It is decreased and there might be internal bleeding from the surgery.

Explanation:

A decreased hematocrit may result from loss of blood. It's therefore important for it to be checked in post-operative patients to observe for possible internal bleeding

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

what subject is this