Final answer:
The macrosystem layer refers to the broad socio-cultural context, including cultural values, customs, laws, and ideologies, that influence an individual's development.
Step-by-step explanation:
The macrosystem layer is a term from Bronfenbrenner's ecological systems theory which describes the broader socio-cultural context that shapes an individual's development. This layer encompasses the large-scale influences, such as cultural values, customs, and laws, ideologies, and the collective belief systems that are prevalent in a given society. It affects all the other layers within the ecological system model by providing the overarching cultural and social climate in which individuals live. The macrosystem therefore is composed of societal blueprints such as the laws, morals, values, religious beliefs, customs, fashions, rituals, and the overall cultural rules that govern social life.