Factor services rendered by the households to the firm  lead to:
a)real flow
b)money flow
c)services flow
d)both (a) and (c)

please give reasons for the answers and please don't provide a link 

Dear Student,
Real Flow- The term real flow means the flow of factor services from household to firms. Similarly, the flow of goods and services from firms to household.

Therefore, Factor services rendered by the households to the firm  lead to real flow(Option A). 
Regards