Several neighbors meet each tuesday to discuss problems facing their community, such as trash and unkempt buildings. eventually they recruit new members, elect officers and establish committees to address specific problems. their neighborhood has become a(n)
a. organization; group b. group; organization c. institution; coalition d. coalition; institution

B. group; organization

Explanation:

We can see that, initially, the neighborhood had formed a group, because they represented a group of individuals who gathered discussed some problems faced by the community. However, we can see that the group became an organization when they decided to form a system, recruiting new members, electing officers and setting up committees, to achieve their intended results, which was to seek improvements to the community's problems.