What is defined as anything used by a person to achieve a certain task?

The term that best describes anything used by a person to achieve a certain task is "resources." Resources encompass a broad range of items, tools, materials, and assets that individuals utilize in order to accomplish their objectives. In the context of community and family studies, resources can be human resources (like skills and knowledge), physical resources (such as tools and equipment), financial resources, and natural resources.

This understanding highlights the versatility and importance of resources in various tasks and projects, as they support individuals and groups in achieving desired outcomes, whether in a personal or community context.

The other choices, while they might appear similar, are more specific. "Assets" usually refer to valuable items that can be owned or used for financial gain. "Tools" are specifically instruments or implements used to carry out particular tasks, usually in manual or mechanical contexts. "Materials" refer to the physical substances or components used in the creation or implementation of something, which is just one category of resources. In contrast, the term “resources” encompasses all types of support, making it the most inclusive and accurate choice for the definition provided.