I gave some to Wakaba earlier . " The scientist explained then began twirling his hair around his finger . " Speechless ? Of course you would be . " He explained still twirling his hair around a slim digit . It was those words that kick started Tatsumi 's brain again .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason a few words triggers someone like that ?
Options:
A. None of the above choices .
B. It 's been implanted in their brain .
C. It 's something that happens to someone with scientists .
D. It 's due to past experiences .


D