Final answer:
Grassroots activities involve members of a community taking direct action such as writing letters, attending rallies, and making phone calls to influence government policies.
Step-by-step explanation:
The activities described consist of local action where members write letters and emails, attend rallies, make phone calls, and energize others in their community to support or oppose government policies are known as c)grassroots activities. Grassroots lobbying is a form of political engagement where local constituents take various actions to influence public policy and opinion. Influencing public opinion through such bottom-up approaches can take many forms, from signing petitions to directly contacting representatives. These activities rely on voluntary participation and can range from conventional methods to more radical acts meant to draw attention to specific causes or issues.