Directions: Select the two answer choices that, when used to complete the sentence, fit the meaning of the sentence as a whole and produce completed sentences that are alike in meaning.

No ready solutions were available; so, Walters assembled two dozen experts worldwide who began to make the nearly invisible ink on Archimedes' palimpsest (written over manuscript) visible, aided by technologies being ________ as they worked.

(1) Incorrect; because no ready solutions were available, it makes sense that Walters' team used technologies as they were invented. It does not make sense to use technologies that were being discarded. (2) Incorrect; it does not make sense for Walters' team to use outdated or ineffective technologies to decipher a historic manuscript. (3) Correct; because no readymade solutions existed, the team would have to use the technologies that were being created as they worked. Also, there is a similar word in 'invented'. (4) Incorrect; although not a technically incorrect option, there are better options available. (5) Correct; because no readymade solutions existed, the team would have to use the technologies that were being invented as they worked. (6) Incorrect; although not a technically incorrect option, there are better options available.