In context, which is the best version of sentence 4 (reproduced below)?
He attends school every day to help his human, Andrew, who has Type 1 diabetes.
A. NO CHANGE
B. He attended school every day to help his human, Andrew, who has Type 1 diabetes.
C. He is attending school every day to help his human, Andrew, who has Type 1 diabetes.
D. He attends school every day to help his human, Andrew, who was having Type 1 diabetes.