Which of the following is generally true of grassroots groups? 

A)  Grassroots groups are typically ineffective because they lack expertise and give up too quickly. 
B)  Grassroots groups are most often focused at the local level. 
C)  Grassroots groups are relatively unimportant to the environmental movement because so few people are involved in such organizations. 
D)  Grassroots groups focus primarily on issues involving children and youths.

Grassroots groups are typically focused on local issues and involve individuals who are not necessarily experts in a particular field. These groups often work to build support and mobilize communities around a specific cause or issue. While they may not have the resources or expertise of larger organizations, they can be an effective way to bring about change at the local level. The other options are incorrect; grassroots groups are not inherently ineffective or unimportant, nor do they exclusively focus on children and youths.