Final answer:
The provided data does not contain enough information to estimate the number of species in Community C. Estimating species number typically requires specific ecological and species distribution data, which is not available in the given details.
Step-by-step explanation:
The information provided does not contain specific data regarding Community C, nor does it mention a series of numbers relating to Community C's species count that includes the options provided (-9, -12, -8, -18). Therefore, it is impossible to directly answer the question regarding the number of species in Community C from the given data. To estimate the number of species in any community, one would generally need specific information about the diversity of species within that ecosystem, birth and death rates, and potentially, results from a mark and recapture study or other ecological sampling methods.
To apply mathematical routines to quantities that describe communities, one typically uses data about species counts, interactions, and changes over time, as detailed in the principles of 4.12 and 4.A.5. Unfortunately, the necessary information to solve this problem is missing. However, if we had the proper data, we could use calculations or models, as indicated by the AP Biology framework in section 6.4, to make claims and predictions about the community structure.