What three ideals are mutually dependent and guide the conduct of every soldier?

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

Sarah and joe are arrested for allegedly stealing computer equipment. which of the following is correct? the trial would only begin and end in the state court system in the state where the crime is alleged to have happened. the trial would begin in a state-level appellate court and go to the federal court of appeal if the verdict is challenged. the trial would begin in a state-level court of original jurisdiction and go to a state appellate court if either side appeals the case. the trial would begin in a u. s. district court for the circuit and go to the u. s. supreme court if either party challenges the verdict.

Which best describes why it is necessary to evaluate a solution?