If the following connective were used between the last two main points in an informative speech, the speech would most likely be organized in order.

Chronological.

Explanation:

An informative speech primarily intends to inform or educate the readers about a particular subject matter or topic. Such a speech is usually organized in a specific pattern(chronological, spatial, problem-solution, etc.) to convey the intended ideas effectively and elicit the desired response from the audience.

As per the question, the speech would be characterized as arranged in 'chronological' order if the connective has been employed between the last two key points as this reflects that each event is leading to another and how they are affiliated to one another in a sequence. Therefore, such an organizational pattern would display the sequence or series of items chronologically which promotes a comprehensive understanding of the content to the readers.

thats exactly the right answer

b. our party quickly made its way into the cave / but we failed to find our host [the cyclops] himself inside.