They form a polar molecule, that is, ________ with a slightly positive end and a slightly negative end..

A. it        B. that       C. this      D. one

They form a polar molecule, ____ is, ____ with a slightly positive end and a slightly negative end.

They form a polar molecule, ____ is, ____ with a slightly positive end and a slightly negative end.

1. A.
   which; that
2. B.
   it; one
3. C.
   that; one
4. D.
   one; that

They form a polar molecule, ____ is, ____ with a slightly positive end and a slightly negative end.

A. which; that              B. it; one                     C. that; one                  D. one; that