Final answer:
Option (a) 'Know yourself' effectively hooks the reader by juxtaposing a familiar saying with new social psychology insights, thus engaging attention for a discussion on self and socialization.
Step-by-step explanation:
To best introduce the topic and engage the reader's attention, we should consider which sentence effectively hooks the reader and sets the stage for discussing the latest findings in social psychology. Option (a) "Know yourself" is a well-known maxim, but the latest findings in social psychology suggest incorporates a familiar saying with a contrasting idea, which could intrigue the reader. Option (b) adds historical context, which sets up a foundational understanding, while option (c) emphasizes the commonality of self-reflection before introducing the latest findings. Lastly, option (d) states the ongoing nature of social psychology and its latest findings directly. Among these, option (a) may be particularly effective as it juxtaposes a timeless concept with new scientific insights, capturing curiosity and setting the tone for a discussion on self-development and social interaction.