The report on the gross national product—the nation’s total production of goods and services—
showed that second-quarter inflation was somewhat lower than a previous estimation and
the savings rate slightly higher.the clauses highlighted in red are parallel to each other and to maintain the parallelism and should be followed by a "that" therefore we can eliminate options A/B and D
between C and E
(C) a previous estimate and that the savings rate
is slightly higher
the use of present tense verb-is is wrong for an event that took place in the past
therefore E is the correct option!!
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Persistence and determination alone are all-powerful ~ :)