Answer:
shared knowledge
Step-by-step explanation:
-Competitive advantage is a condition that allows a company to be in a better position than the competition.
-Shared knowledge is when you learn something through other people.
-Shared risk is when the cosequences of a particular situation fall on different people or organizations.
-Ease of market entry refers to how easy it is for a compay to enter to a market.
According to this, the answer is that the benefit of strategic alliances that Boeing was most likely seeking is shared knowledge as the excerpt indicates that Boeing was interested on taking advantage of Siemens technology which means that they wanted to learn from Siemens.