Measuring ammonia concentration in vitreous humor in the eyes of cadavers is useful for estimating the postmortem invterval to a certain point.

why does this method only have a limited utility for this purpose?

a) the positive linear relationship between body age and ammonia concentration only holds for early stages of decomposition.

b) the negative linear relationship between body age and ammonia concentration only holds for early stages of decomposition.

c) the positive linear relationship between body age and ammonia concentration only holds for later stages of decomposition.

d) the negative linear relationship between body age and ammonia concentration only holds for later stages of decomposition.

A) The positive linear relationship between body age and ammonia concentration only holds for early stages of decomposition.

Explanation:

The concentration of ammonia in the vitreous humor in the eyes of the cadavers has provided some considerable help in forence reports and other areas when it is necessary to know what was the postmortem interval of that body. However, this aid is only effective for a limited time because the positive linear relationship between body age and ammonia concentration is valid only for early stages of decomposition. After time has elapsed, this concentration is difficult to measure and the determination of postmortem time is impossible to determine.

d. making up measurements to record.

the answer is :