Railroads were once operated based on the thinking that users wanted trains that would offer the most in quality, performance, and innovative features. The railroad managing companies overlooked the fact that there could be other modes of transportation. This reflects the $\_\_\_\_\_\_\_\_$ concept.

Railroads were once operated based on the thinking that users wanted trains that would offer the most in quality, performance, and innovative features. The railroad managing companies overlooked the fact that there could be other modes of transportation. This reflects the $\_\_\_\_\_\_\_\_$ concept.

marketing

selling

societal marketing

production

product