Complex sentence: SEVC-d has a major advantage over SEVC-c in allowing the experimenter to measure membrane potential, and as it obviates passing current and measuring voltage at the same time, there is never a series resistance error.
Split into simpler sentences: SEVC-d has a major advantage over SEVC-c in allowing the experimenter to measure membrane potential. Furthermore, as it obviates passing current and measuring voltage at the same time, there is never a series resistance error.