Free points and, ofc, brainliest [the sequel]

yet again, have a lovely day :))

Briefly explain how one development from the period 1861 to 1865 not directly mentioned un the excerpts supports mcpherson's argument

With the use/abuse of alcohol, the heart is more efficient in the use of nutrients by the heart tissue.

The double-blind procedure is most for a.random assignment b.the placebo effect c.operational definitions replication d. standard deviations