Caitlin plans to conduct research to answer the question, "does loud music cause people to remember less of what they read? " which research method should she use to answer her question?

experiment                                              

Explanation:

Experiment: In psychology, the term experiment is defined as a method of investigation that underlies the hypothesis being scientifically tested.

In an experiment, generally, three different variables are being used including:

1. Dependent variable (the effect)- is measured.

2. Independent variable (the cause)- being manipulated or changed.

3. Extraneous variable- being controlled.

Advantage: An experiment needs to be objective.

In the question above, the given statement signifies the experiment.

- "sack of constantinople, (april 1204). the diversion of the fourth crusade from the holy land to attack, capture, and pillage the byzantine city of constantinople divided and dissipated the efforts of the christians to maintain the war against the muslims. the fourth crusade was corrupted from its purpose early on."

- "the crusades were a series of religious wars undertaken by the latin church. the first crusade arose after a call to arms in 1095 sermons by pope urban ii. the first crusade unleashed a wave of impassioned, pious catholic fury, which was of constantinople, the capital of the christian-controlled byzantine empire."

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