The so-called "investment model" is a model that seeks to explain why people stay with their long-term relationship partners. This model identifies three key factors, namely a. passion, commitment, and intimacy. b. security, anxiety, and avoidance. c. satisfaction, alternatives, and investments. d. similarity, familiarity, and propinquity.

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C. Satisfaction, alternatives and investments.

Explanation:

For the so called investment model, the three major factors that maintains commitment in a relationship are the level of satisfaction gotten, comparisons with other alternatives available and size or level of investments.

This was gotten from "The Investment Model of commitment process" by Caryl E. Rusbult. He also called it the three predictors of relationship commitment.

C- Satisfaction, alternatives and investments

Explanation:

In psychology studies, factors keeping couples together long term even when the benefits aren't as many were discovered as the investment model.

The three factors identified are:

metallurgy is your answer

the "study of metals and the process of refining ("

note that it says metal. metallurgy has the word "metal" in it, and so is most likely your answer (and is your answer).

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