Find out the most effective word from the given options to fill in the blanks of the following question.

1. Although the ______ basis for the final stage is found in the legislation of the time of Moses (latter part of the second millennium B.C. it is in reality scarcely earlier than the 5th century B.C., and the Jewish theory finds analogies when developments of the Levitical service are referred to David.

2. Whatever ______ action the Dawkins are involved in would certainly be tainted if Fred knew how Joseph acted up there.