The author of Passage 1 suggests that an advantage of
the method Lewis’s team used to grow
microorganisms is that it
A) identifies the requirements for soil bacteria to
thrive and replicates those features in
artificial soil.
B) enables soil bacteria to take in more nutrients
than they typically consume in natural settings.
C) directly affects the cell walls of bacteria rather
than the proteins those bacteria produce.
D) allows researchers to make use of soil bacteria
that they had previously been unable to exploit.