A The board is reviewing the curriculum have found numerous courses that have become redundant in a changing world.
B The board reviewing the curriculum has found numerous courses that became outdated,and have become redundant in a changing world
C The board reviewing the curriculum has found numerous courses that became outdated and others that have become redundant in a changing world
D The board reviewing the curriculum has found numerous courses that have become outdated, and others that have become redundant in a changing world