Which of the following is a testable hypothesis? a. after careful analysis, it is concluded that parrots are prettier than crows. b. cougars are the best. c. common house spiders need to eat insects to live. d. slime molds might be important but they are gross and disgust.

C i think . Hope this helps

Answer;

C. Common house spiders need to eat insects to live.

Explanation;A hypothesis is a tentative prediction or explanation of the relationship between two or more variables.A testable hypothesis is a hypothesis that can be proved or disproved as a result of testing, data collection, or experience. A testable hypothesis must be a relational statement between two or more variable. It should include phrases such as "more than", "less than", "greater than", "different from", or "related to". It also must be justifiable that is consistent with an existing body of research findings.

Interacting group of various species in a common location. for example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.