Which of the following mechanisms is preferred for the electrophile shown below? 
Definitions:
Intelligence
A complex trait that encompasses the ability to learn, understand, reason, make decisions, and adapt to new situations.
Fluid Intelligence
Those types of basic intelligence that make learning of all sorts quick and thorough. Abilities such as short-term memory, abstract thought, and speed of thinking are all usually considered part of fluid intelligence.
Age
The amount of time someone has existed or something has been in existence, often used to denote maturity, life stages, or periods of history.
Specific Genes
Particular segments of DNA that encode for traits or characteristics, influencing everything from eye color to susceptibility to certain diseases.
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