Annelids, like the earthworm, and arthropods, like insects or spiders, have three main structures in their nervous systems:
a brain, a dorsal nerve cord, and a ventral nerve cord
a brain, segmented ganglia, and a ventral nerve cord
segmented ganglia, a dorsal nerve cord, and a ventral nerve cord

Segmented ganglia, a dorsal nerve cord, a ventral nerve cord

Explanation:

Though Arthropods and annelids are different they are segmented organisms with a basic level of nervous system.

d i think its   answer d

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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