Answer: The correct answer is: 1 - It conveys her understanding that space exploration is dangerous.
The word "hostile" has a negative connotation and implies a sense of danger and difficulty. By using this word to describe the environment of space, the author is emphasizing the risks and challenges associated with space exploration. This suggests that the author recognizes the dangers of space travel and the need for caution and preparation when undertaking such endeavors. Therefore, the author's tone in the paragraph is cautious and realistic rather than dismissive or fearful.
Step-by-step explanation: