The license of an active Oregon real estate broker who is associated with a principal broker 1. must be renewed before the expiration date to remain active
2. must be displayed in the office of the principal broker under whom the broker is licensed

1.

Explanation:

The Oregon Real Estate is an agency that gives license to real estate brokers, principal brokers, property dealers, etc. The real estate license according to guidelines of Oregon Real Estate needs to be renewed every two years.

The Estate brokers needs to follow the guidelines of renewing the license which suggests that they need to complete their LARRC from a certified institution. They are also required to maintain the attendance for three years in the Certified institution.

The license that's been granted to Oregon real estate broker associated with a principal broker needs to renew their license before its expiration date to remain active. Thus the correct answer is first option.