PrepTest 86, Section 3, Question 1
Researcher: During the rainy season, bonobos (an ape species closely related to chimpanzees) frequently swallow whole the rough-surfaced leaves of the shrub Manniophyton fulvum. These leaves are likely ingested because of their medicinal properties, since ingestion of these leaves facilitates the elimination of gastrointestinal worms.
Researcher: During the rainy season, bonobos (an ape species closely related to chimpanzees) frequently swallow whole the rough-surfaced leaves of the shrub Manniophyton fulvum. These leaves are likely ingested because of their medicinal properties, since ingestion of these leaves facilitates the elimination of gastrointestinal worms.
Researcher: During the rainy season, bonobos (an ape species closely related to chimpanzees) frequently swallow whole the rough-surfaced leaves of the shrub Manniophyton fulvum. These leaves are likely ingested because of their medicinal properties, since ingestion of these leaves facilitates the elimination of gastrointestinal worms.
Researcher: During the rainy season, bonobos (an ape species closely related to chimpanzees) frequently swallow whole the rough-surfaced leaves of the shrub Manniophyton fulvum. These leaves are likely ingested because of their medicinal properties, since ingestion of these leaves facilitates the elimination of gastrointestinal worms.
Which one of the following, if true, most strengthens the researcher's argument?
Bonobos rarely swallow whole leaves of any plants other than M. fulvum.
Chimpanzees have also been observed to swallow rough-surfaced leaves whole during the rainy season.
Of the rough-leaved plants available to bonobos, M. fulvum shrubs are the most common.
The leaves of M. fulvum are easier to swallow whole when they are wet.
The rainy season is the time when bonobos are most likely to be infected with gastrointestinal worms.
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