B) Logic is easily understood.
Logic is the abstract noun in the given sentences. By which, logic is the philosophical understanding of valid reasoning. It is more of a concept and a perceptual system of a model on how human can use this body to perform tasks but it is an invisible force or a psychological construct βan idea that manifests and exists but cannot be perceived directly. While skill on the other hand can be observed and quantified with the use of tools such as tests, and etc.
The sentence that contains an abstract noun is B: 'Logic is easily understood,' where 'Logic' represents an intangible concept. The other options consist of concrete nouns. Therefore, abstract nouns like 'logic' refer to ideas that cannot be perceived with the senses.
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