Final answer:
Margaret Heckler was the Secretary of Health and Human Services who inaccurately claimed that scientists were receiving sufficient funding during the Reagan Administration.
Step-by-step explanation:
The Secretary of Health and Human Services during the Reagan Administration, who argued that scientists were receiving all the funding they could possibly use, was Margaret Heckler. This claim has been critiqued as untrue, as there were issues with underfunding in various scientific research areas during that time.