Final answer:
Shh and BMPs are important in dorsoventral patterning of the neural tube.
Step-by-step explanation:
Lateralization of the neural tube refers to the development of asymmetry in the left and right sides of the neural tube. Shh (Sonic Hedgehog) and BMPs (Bone Morphogenetic Proteins) play important roles in this process by promoting the growth of specific cell types in different regions of the neural tube.
Dorsoventral patterning of the neural tube refers to the differentiation of cells along the dorsal-ventral axis, from the back to the belly of the neural tube. Shh and BMPs are also important in this process by specifying the identity of different cell types along this axis.
Therefore, the correct answer is b) Dorsoventral patterning of the neural tube.