When four preschoolers pretend to go to the hospital, with two children acting as patients, one as a nurse, and one as a doctor, they are engaged in play.

a. solitary
b. parallel
c. associative
d. cooperative

answer; a database is an organized collection of data in digital format that users to keep track of information;

conditions such as oral thrush or oral herpes viruses can cause the tongue to swell due to inflammation. other medical conditions include tumorous cancer, acromegaly (giantism), amyloidosis, sarcoidosis, hypothyoidism, and kawasaki disease.

explanation: