What is an adaptive test?
A. A computerized test that presents students with questions based on their answers to previous questions
B. A test that adapts to the general skill level of each incoming class
of students
C. A test that adapts to how quickly a student was able to answer
previous questions
D. A test that gets more difficult as the student progresses through
the questions

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.