12. Why would something most likely be used as model?

a. to address problems more efficiently
O b. to provide an example to imitate
O c. to increase its effectiveness
d. to limit its availability


13. What is the antecedent of the pronoun "it" in this sentence?
Because this dollhouse is almost three hundred years old, it is historically important. *

a. because
b. dollhouse
c. three
d. old