Answer:
Correctly Constructed Sentences:
Developing an extensive network is a critical aspect of your professional development; social networking technologies can assist you with building and managing your network.
Many corporations are “going green” and promoting environmentally sustainable business practices.
Internships offer valuable work experience and networking opportunities; therefore, most MBA programs encourage participants to hold an internship at some point during the course of their studies.
The first and last sentences are correctly constructed.
The second sentence lacks a conjunction or punctuation to connect the two independent clauses. The third sentence lacks a conjunction or punctuation to connect the two independent clauses.
Explanation:
Top 3 Authoritative Reference Publications or Domain Names Used in Answering this Question:
Harvard Business Review
Forbes
The Wall Street Journal