Which of the following are two main reasons why bilingualism has increased?

Imagine that you are looking at a geometric drawing. At first, one shape in this drawing seems to be in front of other shapes. The next moment, this same shape seems to be located behind a second shape. This phenomenon is called:

a. depth perception. b. an illusory contour. c. an ambiguous figure-ground relationship. d. holistic recognition.

Macy has a fear of going to the mall because she is worried she will have a panic attack. She is afraid she will not be able to escape. This is an example of what type of disorder:

a. Panic disorder b. Generalized anxiety disorder c. Agoraphobia d. Panic attack