Final answer:
Starr's Tumblr page about Khalil primarily raises awareness about the injustice he faced, serving as a form of advocacy and contributing to the conversation on racial injustice and police brutality.
Step-by-step explanation:
The creation of Starr's new Tumblr page about Khalil can be seen as a way to speak up for him by raising awareness about the injustice he faced. Through this platform, Starr is able to reach a wider audience, shedding light on Khalil's story and the circumstances of his death, which can be seen as a form of advocacy against racial injustice and police brutality. This action falls under option C) It raises awareness about the injustice Khalil faced.
The Tumblr page may serve multiple purposes, such as memorializing Khalil's life (option A), providing a space for Starr to share her memories and personal thoughts about Khalil (option B), and potentially promoting Khalil's art and creativity if that was a part of what she chose to share (option D). However, the primary objective of the page is to bring attention to Khalil's case and to serve as a platform for social justice, aiming to make a difference in the larger conversation surrounding these critical issues.