The prefix "acri-" refers to bitterness, either a bitter sensation or a bitterness of personality. In this instance it is the latter usage that is relevant, as “acrimony” is a feeling of bitterness towards someone else. This is similar in meaning to “hostility,” or “rancor,” which means resentment. To provide further help, “influx" means arrival of a large group of things or people; a “monument” is a statue built to commemorate someone or some event; and “admonition” means caution or warning.

The prefix "nom-" means related to names, and “nomenclature” means a naming system. As such, it is most similar in meaning to “taxonomy,” which is another name for a system of naming and identifying things. To provide further help, a “discrepancy” is an inconsistency; a “pseudonym” is a fake name or a nickname; "fatigue" is exhaustion or extreme tiredness, and a "title" is the name by which a work of art or literature is known.

Since "vocation" is a noun that means job or profession we're looking for another noun that also means job. "Task" sounds like it might be the correct answer, but a "task" is a job in the sense of a piece of work to be done, it is not a day-to-day job or profession. "Occupation," on the other hand, means a job or profession, so it is the correct answer.

The word "aqueous" means watery or pertaining to water. The best choice is "watery," as it is a part of the definition of "aqueous." Considering the other choices, "sedimentary" means having to do with sediment, "wispy" means light and delicate, and "suggested" means mentioned for consideration.

The prefix "tact-" means related to touch, so “tactile” means able to be touched. To provide further help, “audible” means able to be heard; “visible” means able to be seen. Notice that the suffix "-ible" means able to be.

The prefix "acri-" means related to bitterness or harshness. The word “acrid” means unpleasantly sharp or bitter in smell or taste. To provide further help, “soothing” means comforting; “pacifying” means calming; “jaunty” means cheerful; “cantankerous” means grumpy. 

The Latin root "duct" means to lead. You may, for example, have seen an "aqueduct," which literally "leads water" in a particular direction. Someone or something that is "ductile" is "able to be led," in the sense of being easily influenced or bendable. This is also the meaning of the word "pliant." "Rigid" is an antonym.

The prefix "ocu-" refers to being able to see, or to the eyes. This is similar to the prefix "vis-," which means to see. We can infer that “ocular” and “visual” are closely related to one another. To provide further help, “audio” means having to do with sound and hearing; “tactile” means able to be touched; “condemned” means considered guilty and awaiting punishment.

The prefix "ten-" means able to be held or defended, so the word “tenable” describes an idea that is able to be held or defended. We could also call this a “reasonable” idea. To provide further help, “debunk” means disprove; “catastrophic” means disastrous; “ambiguous” means unclear; “sporadic” means random and occurring infrequently.

The word "placid" means calm and peaceful. For example, one might write, "You could see your reflection like a mirror image in the placid lake." So, "calm" is the correct answer.