#### Answer

The correct answer is:
(a) accelerations equal in magnitude, net forces unequal in magnitude

#### Work Step by Step

The correct answer is:
(a) accelerations equal in magnitude, net forces unequal in magnitude
Since the blocks are connected together, the two blocks will accelerate with the same magnitude.
According to Newton's second law: $F = ma$
Therefore, if the accelerations have the same magnitude but the masses are different, then the net forces must be unequal in magnitude.