Which of the following is expected to be the base peak in the mass spectrum of pentanal? 
Definitions:
Efficacy
The ability to produce a desired or intended result.
Erikson
A developmental psychologist known for his theory on the psychosocial development of humans, highlighting eight stages that span from infancy to adulthood.
Autonomy
The ability to make a knowledgeable, voluntary choice on one's own.
Shame and Doubt
A stage in Erik Erikson's psychosocial development theory where toddlers learn to exert autonomy, facing challenges of doubt and shame.
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