Why did the introduction of sound into film initially impede the movements of actors?

In contour drawings crossing lines is one way to indicate this

Which statement is true about the function f(x)= –? the domain of the function is all negative real numbers. the range of the function is all positive real numbers. the domain and range of the function have opposite signs. the domain and range of the function are the same.which statement is true about the function f(x)= –? the domain of the function is all negative real numbers. the range of the function is all positive real numbers. the domain and range of the function have opposite signs. the domain and range of the function are the same.

Whereas traditional stock agencies showcase the work of professional photographers, anyone can submit to microstock agencies, provided images meet the criteria that the microstock agency has set up. true or false?