1. choose the correct meaning of the word TOTAL in TOTAL INTERNAL REFLECTION

a:because the critical angle is 100 degrees

b:because 100% of the light is reflected

2. choose the correct meaning of the word INTERNAL in TOTAL INTERNAL REFLECTION

a: because it happens inside the glass

b: because the light is near to normal

3. choose the correct meaning of the word REFLECTION in TOTAL INTERNAL REFLECTION

a. because the light is internally refracted

b. because the light is internally reflected