The following passage (paragraph 10) mainly suggests that Why indeed? Paabo and other scientists pondering this question are themselves explorers, walking new ground. They know that they might
have to backtrack and regroup at any time. They know that any notion about why we explore might soon face revision as their young
disciplines-anthropology, genetics, developmental neuropsychology-turn up new fundamentals. Yet for those trying to figure out what
makes humans tick, our urge to explore is irresistible terrain. What gives rise to this "madness" to explore? What drove us out from Africa and
on to the moon and beyond?
A. why humans explore is unanswerable
B. scientists are like explorers
C. exploration is connected to genes
D. scientists will soon know why humans explore