Answer:
a. Karen Meyer's personal records
c. American red cross
Explanation:
The $6,000 contribution should be recorded in Karen Meyer's personal records because 1) the donation was made on her personal name 2) a donation of such size is relevant when Karen files her taxes.
The contribution should also be recorded in the American red cross records because the organization needs to clarify to the tax authorities where each sum of money it obtains comes from.