Answer: C) Internal
Step-by-step explanation:
Diversity is defined as the variation that determines that things or people are different and unique in some or other way .The phases that are included in the diversity consist of gender, race, ethics,age, religion, beliefs etc. Thus, internal as well as external factors are being included to display diversity .
Other options are incorrect because personal is private traits, statistics and biographic factors are not considered in diversity dimensions. Thus, the correct option is option(C).