SAT Practice2b2c783d-0fb5-4589-bfab-c94cee0c2768

Practice one SAT question at a time

Questions come from the Bluebook question bank. Made by Iskaa303 (Iskander Madikhan).

For scientists to produce new iron nanoparticles of a specific size or strength, they must first be able to monitor reactions between oxygen and existing iron nanoparticles at a near-atomic level of detail. Fortunately, chemistry blank and his colleagues at Temple University recently developed a new approach that does just that.

Which choice completes the text so that it conforms to the conventions of Standard English?