D- https://www.hsi.org/news-media/time_and_cost/

Question 1

D1- cost of testing

Answer 1

• Some animal tests take months or years to conduct and analyze at a cost of hundreds of thousands—and sometimes millions—of dollars per substance examined

Question 2

D2- cost of testing

Answer 2

computer modeling techniques are lightning-fast, and many cell-based in vitro methods are amenable to “high throughput” automation using robotics—all at a much lower cost than animal tests.