Question

The automobile industry's success came through the following:

2. A mass production assembly line.

3. Television advertising

4. Making the same models of car year after year.

5. Making cars more expensive.

Answer 1

A. A mass production assembly line.

Step-by-step explanation:

By having an assembly line, the production of cars became much more efficient, since the work was split up between workers and moved from person to person

Answer 2

answer : 2. a mass production assembly line