$1.$ When the Space Shuttle Challenger was destroyed during launch in January $1986,$ which of the $4$ primary basic risk manageme XN$15$ nt principles did the project manager not follow? $2.$ The project estimation method that is based on the requirements specification not the technology used is known as $3.$ The at the end of the day project success can be boiled down to $4.$ Evidence that a colleague or customer is an $$Active Listener$$ is demonstrated by their willingness to $\_$and confirm agreement.. $5.$ A symbolic but very important end to any project is the $($Place answer