A. thaliana, or Arabidopsis, is a common weed. Biologists have selected it over hundreds of thousands of other flowering plant species to serve as an experimental model organism because _______.
(a) it can withstand extremely cold climates.
(b) it can reproduce in 8-10 weeks.
(c) it produces thousands of offspring per plant.
(d) Both (b) and (c) are true.
Answer: B