All of the following molecules share the formula, C4H8O2.Indicate which, if any, are chain isomers, positional isomers, or functional isomers.Give reasons) for your answers. 
Definitions:
Language Acquisition
The process by which humans learn to perceive, comprehend, and produce language, typically occurring in early childhood through natural exposure and interaction.
Parental Attention
The degree of time and focus a parent gives to their child, which is crucial for the child's emotional, social, and cognitive development.
Epigenetic System
The epigenetic system involves the study of heritable changes in gene expression that occur without altering the underlying DNA sequence, influenced by environmental factors.
Social Impulse
The innate or acquired drive that motivates individuals to seek out and engage in social interactions and relationships with others.
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