The word "dispute" can be used as a noun or a verb. All of the answers are verbs, so we can presume that it is being used as a verb too. To "dispute" something is to disagree about it or to argue with someone about it. Thus, the best answer is "argue." The option "agree" is a decent antonym, but we are looking for the synonym!

"Exclude" means to deny someone access to something, or to keep them out of something.

To "delineate" a concept is to carefully describe it, spelling out the ideas that are involved in a detailed and orderly way. To "outline," or to illustrate a plan as an ordered sequence of points, is the closest synonym here. "Blending," or mixing, is not an action we should take when carefully separating the components of a larger concept. Similarly, to "confound" is to confuse or mix up, so that choice is also incorrect. Finally, "eliminate" means remove and is not related to "delineate."

"Entreat" is a verb that means "ask someone earnestly or anxiously to do something" or "ask earnestly or anxiously for (something). So, we need to pick out an answer that means something like "ask earnestly." While "treat" may seem like a potentially correct answer because the word "entreat" contains the word "treat," "treat" does not mean "ask earnestly," so "treat" cannot be the correct answer. "Beg," however, is a verb that can mean "ask (someone) earnestly or humbly for something" or "ask for (something) earnestly or humbly," and because "beg" is the answer choice closest in meaning to "entreat, "beg" is the correct answer.

"Divulge" means make private information public, so "disclose", which means reveal, is the best choice. "Supress", which means hide, is an antonym of "divulge," and none of the other answer choices are related in meaning to "divulge": "suppress" means subdue or repress; "dovetail" means join together, or more specifically, join together with interlocking parts; "fetch" means go get; and "vomit" means be physically ill or throw up.

“Applaud” means clap in approval of or praise something or someone. “Criticize” means point out someone or something's flaws; “condemn” means criticize harshly; “accommodate” means allow or provide a home for; and “resolve” means decide or finish.

To “announce” means to declare publicly, often letting information be known for the first time. “Whisper” means to speak softly and quietly; “conceal” means hide; “deceive” means trick or lie to; and “mar” means ruin or spoil.

“Ratify” means "approve," more specifically approve an official document. Historians can discuss the ratification of the United States Constitution, for example. As for the other answers, “remonstrate” means argue with; “demonstrate” means show how something is done by doing it oneself; and "forge" can mean either make something out of metal using high temperatures or make something that looks like it is authentic but is not, such as a document or someone else's signature. 

“Meddle” means get in the way of or "interfere." As for the other answer choices, “obscure” means hide; “avert” means stop from happening or turn away; “reprimand” means scold or admonish; and “implore” means beg or urge.

“Vex” means "annoy." As for the other answer choices, “protect” means look after; “support” means help; “accede” means agree; “secede” means leave a group.