Based on the affixes, which of the following words could be defined as 'the study of humans'?

Anthropomorphism refers to the attribution of human characteristics or behaviors to non-human entities, such as animals or inanimate objects. While it includes the term "anthropos," it does not pertain to the study of humans; rather, it focuses on how humans interpret or conceptualize non-human entities in human-like terms.

Biology is the scientific study of life and living organisms, encompassing various fields such as zoology and botany. Although humans are a subject within biology, the term itself does not specifically denote the study of humans. Instead, it broadly covers all forms of life, making it too general for the query.

Philanthropy describes the desire to promote the welfare of others, typically through charitable donations and actions. While it may involve humans and their welfare, it is not a field of study but rather a practice or philosophy aimed at helping others, making it irrelevant to the definition sought.