GMAT Test Prep: SC-31026575 GMAT Sentence Correction | TOEFL IELTS GMAT GRE SAT ACT PTE ESL

A to be huge reservoirs of energy, possibly causing sea floor instability, and

B to be huge reservoirs of energy, possibly causing sea floor instability, and even as

C as huge reservoirs of energy, possibly causing sea floor instability, and

D as huge reservoirs of energy, and the possible cause of sea floor instability,

E as huge reservoirs of energy, as possible causes of sea floor instability, and even as