A tech company that specializes in consumer electronics $($e$.$g$.,$ smartphones, laptops, tablets$)$ wants to invent an electric car and compete in the auto industry, specifically in the niche EV market.

$1.$ If the electric car is successfully produced and launched in the market, it would be an example of $[$ select $]$ a line extension, reducing profuct mix breadth, a brand extension, or increasing product mix depth for this company.

$2.$ As the marketing department envisions the entire new product development process, the marketing manager mentioned that before testing the product in the market, the company must develop a prototype and extensively test it in real$-$world conditions. This is typically done in the $[$ select $]$ commercialization, business analysis, development, or screening and evaluation stage of the new product development process.