Sam and tonia are a white couple who married when they were both 30 years old. bill and steffie, both white, married at age 19. carl and monica, a black couple, married at age 28. miguel and grace, a hispanic couple, married at age 31. which of these couples is least likely to divorce?

experiments.

surveys.

questionnaires.

interviews.

case studies.

participant and non-participant observation.

observational trials.

studies using the delphi method.

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer