The words also, however, instead, and therefore are examples of

The answer to this question is transition words.

Transition words are words that is used to connects one idea to another. Transition words also helps the readers to give connection to one sentence to another one. There are types of transition words and this are additive transition, adversative transition, casual transition, and sequential transition.   

the most ethic and honorable thing for the newspaper to do are:

be completely transparent in reporting about the company’s attempt to trade favors.

contact other construction companies to tell them about the situation.

these two options are the most ethic because both promote the market fair course, by telling the other competitors about the company attempt to get ahead in the market by trading favors, the market is guaranteed equality and justice in the trading of goods and services.