Final answer:
Between 1550-1600, the silhouette of men's clothing widened, jackets became rigid in shape, and puffs and slashes became more prevalent in the design.
Step-by-step explanation:
Between 1550-1600, men's fashion underwent significant changes. Answer B is correct: the silhouette of men's clothing widened, and jackets took on a rigid shape. There was an increase in the use of puffs and slashes in the garments during this time. This period, known as the Renaissance, saw men's fashion embrace more elaborate and ornate designs as compared to the simpler and more utilitarian styles of earlier times.