Question

Which is the correct possessive form of the singular noun needed to complete the sentence? The _____ concerns about animal habitats are well founded. agencys agencies agency’s agencys’

Answer 1

The correct answer is agency's.
You said that you need the possessive form of the singular noun here. The singular noun is agency. You create the possessive form simply by adding an apostrophe (') and -s. So the possessive form of agency would be agency's.
On the other hand, the word agencies is plural - you would for the possessive form for plural nouns by adding the apostrophe only - agencies'. 

Answer 2

Answer:

's

Explanation: