D
because it says used which is past tense
Answer:
sorry bro just here for the points but i hope your having a great day/night!
Explanation:
Answer:
It is true, quality cannot be a sometimes thing.
Answer:
to show how difficult the task was and how important the solutions would be.
Explanation:
The author shows how difficult it was to land on the moon safely and return home. There were several big problems with this very important mission and big problems need big solutions, for this reason, the collaborators who made themselves available to participate in the project were strengthened in these difficulties and worked hard to search for efficient and successful solutions. With that, we can say that the author mentions the uncertainty that the team had to manage to send the man to the moon to show how difficult the task was and how important the solutions would be.
