C
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Answer:
Competition.
Explanation:
Competition refers to a relationship between rival organisms whose economic niches overlap with each other. When both organisms compete with each other for the limited resources available in ecosystem.
In the given case, the Sparrows replacing Bluebirds is a result of competition. Because they both share the same ecological niche, they are in competition with each other for the limited resources.
Therefore, competition is the correct answer.
The answer is by using a positive tone. According to research, providing criticism in performance appraisal has revealed that giving negative feedback with a positive tone essentially makes employees believe more positive than when they be given positive feedback with a negative or unenthusiastic tone. This means that the power of deliverance frequently prevails over the substance of your message in feedback conditions.