Scholars who study ancient languages are vexed by the problem of indecipherable symbols: it is simply
impossible to determine conclusively what some symbols meant to the people who used them. However
scholars can always hold out hope that a
"Rosetta Stone" will be discovered. The actual Rosetta Stone v
a rock, dug out of the ground in 1799, on which was inscribed the same text in three languages: classica
Greek, which scholars knew, and two Egyptian language scripts, which they did not. Scholars used the
information provided on the Rosetta Stone to
"crack the code"
of much Egyptian hieroglyphic writing.
Question
In the first sentence,
"conclusively" most nearly means
O at last
O in the mean time
O with certainty
O within reason