[{"blank":"1","title":"Correct answer: airports","correct_answer_explanation":"The word 'airports' fits grammatically as a plural noun that serves as the subject of the sentence, indicating a location where one might encounter K-9 cops. It aligns contextually with the idea of public spaces where security measures are heightened, making it a logical choice.","correct_answer_meaning":"'Airports' refers to places where aircraft take off and land, typically involving security checks and law enforcement presence.","wrong_options":{"kickoffs":"'Kickoffs' refers to the start of a game, particularly in football, and does not relate to the context of encountering K-9 cops.","breadboards":"'Breadboards' are surfaces used for cutting bread, which is irrelevant to the context of law enforcement or K-9 units.","braceros':'Braceros' refers to Mexican laborers allowed into the U.S. for work, which does not fit the context of the sentence."}},{"blank":"2","title":"Correct answer: following","correct_answer_explanation":"The word 'following' is a gerund that indicates the action of the dogs as they track scents. It fits grammatically and contextually, as it describes what the K-9 cops are doing in relation to their noses.","correct_answer_meaning":"'Following' means to pursue or track something, in this case, the scents that the dogs are trained to detect.","wrong_options":{"ongoing":"'Ongoing' describes something that is currently happening but does not convey the action of the dogs tracking scents.","farrowing":"'Farrowing' refers to the act of giving birth in pigs, which is unrelated to the context of K-9 cops.","bankrolling":"'Bankrolling' means providing financial support, which does not fit the context of the dogs' actions."}},{"blank":"3","title":"Correct answer: according","correct_answer_explanation":"The word 'according' serves as a preposition that introduces a source of information, fitting grammatically and contextually as it references the study mentioned. It indicates that the following information is based on the study's findings.","correct_answer_meaning":"'According' means as stated by or in agreement with, indicating that the information comes from the referenced study.","wrong_options":{"salting":"'Salting' refers to the process of adding salt, which does not fit the context of referencing a study.","scrolling":"'Scrolling' means moving text or images on a screen, which is irrelevant to the context of the study.","hoarding":"'Hoarding' means to accumulate items, which does not relate to the context of citing research."}},{"blank":"4","title":"Correct answer: Cognition","correct_answer_explanation":"The word 'Cognition' is a noun that refers to the mental action of acquiring knowledge and understanding, fitting grammatically as the title of a journal. It aligns contextually with the study's focus on the dogs' mental processes.","correct_answer_meaning":"'Cognition' refers to the mental processes involved in gaining knowledge and comprehension, relevant to the study of K-9 behavior.","wrong_options":{"Voluntarism":"'Voluntarism' refers to the doctrine that the will is the primary factor in human behavior, which does not fit the context of the study.","Apprehension":"'Apprehension' means anxiety or fear, which is not relevant to the study's focus on cognition.","Connection":"'Connection' refers to a relationship or link, which does not specifically relate to the study of cognitive processes."}},{"blank":"5","title":"Correct answer: recruited","correct_answer_explanation":"The word 'recruited' is the past tense of the verb 'recruit,' indicating that the researchers actively selected the dogs for the study. It fits grammatically and contextually as it describes the action taken by the researchers.","correct_answer_meaning":"'Recruited' means to enlist or select individuals for a specific purpose, in this case, selecting dogs for the study.","wrong_options":{"forewent":"'Forewent' is the past tense of 'forego,' meaning to decide not to do something, which does not fit the context of selecting dogs.","exuded":"'Exuded' means to release or emit, which does not relate to the action of selecting dogs for a study.","balloonist":"'Balloonist' refers to a person who flies in a hot air balloon, which is irrelevant to the context of the study."}},{"blank":"6","title":"Correct answer: unreliable","correct_answer_explanation":"The word 'unreliable' is an adjective that describes the K-9 cops as not consistently dependable. It fits grammatically and contextually, as it reflects the findings of the study regarding the dogs' performance.","correct_answer_meaning":"'Unreliable' means not able to be relied upon or trusted, indicating that the K-9 cops may not always provide accurate alerts.","wrong_options":{"sizable":"'Sizable' means large in size or amount, which does not fit the context of assessing reliability.","pliable":"'Pliable' means easily bent or flexible, which does not relate to the context of dependability.","undefinable":"'Undefinable' means unable to be defined, which does not fit the context of assessing the reliability of K-9 cops."}}]