Inhospitable places on our planet, from steaming hot springs to the thick ice of the polar regions, tend to be populated by specially adapted microbes flourishing, it seems, in these extreme conditions and are therefore called "extremophiles".

(A) flourishing, it seems, in these extreme conditions and are

(B) that seem to flourish with these extreme conditions and

(C) that seem to flourish in these extreme conditions and that are

(D) seeming to flourish in these extreme conditions and are

(E) seeming to flourish with these extreme conditions and that are