Scientific validity is the applicability of a conclusion drawn in the context of a scientific experiment to the world at large.
I believe the answer is B
Skeletal mass increases dramatically during childhood and adolescence, and decreases dramatically at the beginning of the fourth decade of life and decreases with age, with an exception of the skull.
Hope this helps! Have a BLESSED day! :-)
B. its false it's the other way around gametes are produced by gametangia :)
