The inference that cannot be made based on the information provided in the sentence is:
D. The author will likely not continue her journey as there are already too many challenges and obstacles in her path.
The sentence discusses the author's experience of repacking her sled and the feelings associated with that situation but does not provide any information or context about whether the author intends to continue her journey or about the challenges ahead. Therefore, inferring that the author will not continue due to challenges is not warranted based on the given information.