The best options from the list would be that "b. The Portuguese and Spanish were the first Europeans to seek Africans slaves to work in their colonies," and "<span>d. During the 1500s, African slave traders began to sell slaves for the Americas rather than for Muslim lands to the north and east," since this was more profitable. </span>
you said "which statement" but you provided no statements to chose from so how can I answer this? Please add additional information to the text if you want this answered