The two techniques the author most uses to advance their purpose are:
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allusion - The author makes references to common superhero elements and stories that readers may recognize, such as "kryptonite" and "spider bites," to highlight the need for more female superheroes with well-developed backstories.
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point of view - The author's perspective on the need for more female superheroes and equal narrative space is clearly expressed, which helps convey their argument and engage the audience.
Therefore, the correct answers are allusion and point of view.