How can a company distinguish between fully certified engineers and those who are not as qualified? A professional in the same field must write the engineer a letter of recommendation.
b.Fully certified engineers have taken a PE examination and have received a Professional Engineering license.
c.Fully certified engineers must earn at least a master’s degree in their specialty.
d.The engineer will need to work for the company for at least six months in order to gain experience.

The correct option is;

b. Fully certified engineer have taken a PE examination and received a Professional Engineering license

Explanation:

To be recognized as a licensed engineer, it is required for the applicant to have completed a university degree program that lasts up to 4 years and to have worked for up to 4 years under the supervision of a Professional Engineer and pass two exams that test competency of an engineer, known as the Fundamentals of Engineering (FE) exam and the Principles and Practice of Engineering (PE) exam.

Eh but I don't want to