Ais a medical doctor with four years of medical training and three years of residency training (spent mostly in supervised clinical practice).

A medical doctor with four years of medical training and three years of residency training is called a psychiatrist.  Psychiatrist’s residency training mostly spent in supervised clinical practice.  The four years that a medical doctor spent is in the medical school, including internships, and residency training in the hospitals.

"harry t. moore (1905-1951) – civil rights activist, leader, and the first martyr of the civil rights movement. fannie lou hamer (1917–1977) – leader in the american civil rights movement; co-founder of the national women's political caucus and freedom democratic party. james farmer (1920–1999) – congress of racial equality."

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.