B
解析：
[B]项正确，By linking directly to our nervous system 为介词结构充当方式状语。
[A]项错误，直接引语的主句主干为 …computers could pick up what…。
[C]项错误，what 引导宾语从句，作 pick up 的宾语。
[D]项错误，so that 引导结果状语从句。
故正确答案为[B]。
【句子结构分析】
"①By linking directly to o见画陆ur nervous system, computers cou积诗微斗ld pick up ②what we feel and, hopefully, simulate feeling too ③so that we can start to develop full sensory environmen今甚究洋活步皇ts, ④rathe卷触附食杀r like the holidays in Total Recall or the Star Trek holodeck," he says.
本句为主从复合句，主句主干 "..." he says 为倒装语序的主谓宾结构，直接引语作宾语；直接引语的主干 …computers could pick up what… 为主谓宾结构，宾语为 what 引导的宾语从句。
①介词结构充当方式状语；②为 what 引导的宾语从句，作 pick up 的宾语；③为 so that 引导的结果状语从句；④like 为介词，引出 full sensory environments 的同位语。