Final answer:
Handwriting cannot determine the sex or age of the writer; sex is based on chromosomes, while gender refers to societal roles and is not associated with handwriting.
Step-by-step explanation:
Based on the provided information, the correct answer to whether handwriting can determine the sex and age of a writer is d) No, neither sex nor age can be determined. Handwriting is not a reliable method to determine these characteristics. The sex of an individual is determined by the presence of sex chromosomes, such as XX for females and XY for males. This is a biological characteristic that handwriting cannot reveal. On the other hand, gender refers to the roles, behaviors, and attributes that a given society considers appropriate for men and women. This is a social construct that varies across different cultures and time periods. While some may perceive certain handwriting styles as 'masculine' or 'feminine,' these perceptions are subjective and do not provide accurate information about someone's sex or gender.