It can be inferred that the approach which the firms found effective are:
"Mentoring and college recruitment programs".
What is Inference?
Inference refers to a logical conclusion that one arrives at by examining strong evidence or facts related to an event or a text.
In literature, the evidence may come from facts that can be found in the text, poem, or story.
Learn more about Inference at:
https://brainly.com/question/1157124
