Who tried to abolish the slave trade?
a. david livingstone
b. cecil rhodes
c. benjamin disrael

The correct option is "a. David Livingstone"

David Livingstone was a British doctor, explorer and missionary, one of the greatest figures in the history of exploration. Through astronomical observations, he established correct situations in African cartography and made reports on botany, geology and zoology. He also distinguished himself by his fight against slavery. For all that, in Victorian Britain was considered a national hero.