Meaning: 'Memories' refers to the recollections or experiences that one remembers from the past, particularly those that are emotionally significant.

Wrong options:

• divinities: 'Divinities' refers to gods or deities, which does not relate to the context of recalling personal experiences through taste.
• plenipotentiaries: 'Plenipotentiaries' are individuals with full power to act on behalf of others, which is irrelevant in the context of personal memories associated with food.
• melanges: 'Melanges' means mixtures or medleys, which does not convey the idea of personal recollections and is not a suitable fit in this context.

Correct answer: particular

Explanation: The word 'particular' serves as an adjective that specifies a certain type of food, fitting grammatically and contextually within the sentence. It emphasizes the uniqueness of the food being remembered.

Meaning: 'Particular' means specific or distinct, indicating a certain food that stands out in memory.

Wrong options:

• stiffener: 'Stiffener' refers to a substance that makes something stiff, which is unrelated to the context of food and memory.
• westerner: 'Westerner' denotes a person from the western part of the world, which does not apply to the context of food.
• settler: 'Settler' refers to a person who settles in a new area, which is not relevant to the discussion of food memories.

Correct answer: marshmallow

Explanation: The word 'marshmallow' is a noun that fits grammatically and contextually as it describes a specific type of food that can be paired with peanut butter. It aligns with the nostalgic theme of the sentence.

Meaning: 'Marshmallow' refers to a soft, sweet confection made from sugar and gelatin, often used in desserts or snacks.

Wrong options:

• oligo: 'Oligo' is a prefix meaning few or little, which does not relate to food and is not a standalone food item.
• salpingo: 'Salpingo' is a term related to tubes, particularly in anatomy, and has no relevance to food.
• animo: 'Animo' is a term that can refer to spirit or mind, which does not fit the context of food.

Correct answer: participants

Explanation: The word 'participants' is a plural noun that correctly identifies the individuals involved in the study. It fits grammatically and contextually as it refers to the people who took part in the research.

Meaning: 'Participants' refers to individuals who take part in an activity or study, in this case, the young people involved in the food-memory research.

Wrong options:

• tinnitus: 'Tinnitus' refers to a ringing or buzzing in the ears, which is unrelated to the context of a study involving food.
• terribleness: 'Terribleness' is a noun that describes the quality of being terrible, which does not apply to the context of participants in a study.
• nonspecialists: 'Nonspecialists' refers to individuals who lack expertise in a specific area, which does not accurately describe the subjects of the study.

Correct answer: preference

Explanation: The word 'preference' is a noun that fits grammatically and contextually, indicating a choice or liking for something over another. It aligns with the idea of choosing based on memory rather than taste.

Meaning: 'Preference' refers to a greater liking for one alternative over another, in this case, choosing food based on memory.

Wrong options:

• overemphasis: 'Overemphasis' refers to placing too much importance on something, which does not fit the context of making food choices.
• morphogenesis: 'Morphogenesis' is a biological term related to the development of structure in organisms, which is irrelevant to the context of food choices.
• embryogenesis: 'Embryogenesis' refers to the process of embryo development, which does not relate to the context of food and memory.