Which politicking strategy involves gaining support for a position from others?

A) Reciprocation
B) Rationality
C) Ingratiation
D) Coalition building

Coalition building involves gaining support for a position from others by forming alliances or partnerships. This can be an effective politicking strategy as it increases the number of individuals or groups advocating for the same outcome, which can lead to greater success in achieving the desired result. Reciprocation, rationality, and ingratiation are also politicking strategies, but do not involve actively seeking out support from others in the same way as coalition building.