Read this excerpt from The Riddle of the Rosetta Stone.

Then one day a colleague sent him a copy of an inscription that had been found in the ruins of a temple on the Nile River island of Philae.

Which statement best describes the influence his colleague’s act had on Jean-François Champollion?

It was a breakthrough in his research.
It complicated his research.
It made his research worthless.
It was an obstacle to his research.