Which of the Following Is the Best Interpretation of the Graph

question 54

Multiple Choice

Which of the following is the best interpretation of the graph below of mussel size (x-axis) versus energy gain (line graph,left y-axis) ,and number of mussels eaten per day (histogram,right y-axis) ?

• A)Mussels are selected as food sources by crabs.
• B)Crabs select mussels in a way that maximizes their energy gain.
• C)Mussel size does not seem to be a good predictor as to which mussel hungry crabs will select.
• D)Crabs tend to consume most of the largest mussels.
• E)Crabs prefer the mussels with the smallest length for their food resources.

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Definitions:

Experimenter Bias

A form of bias introduced into a study's results due to the experimenter's expectations, attitudes, or behavior affecting the subjects' performance or responses.

Independent Variable

The factor in a study that the investigator alters to examine its impact on the outcome variable.

Dependent Variable

Refers to the variable in an experiment that is expected to change as a result of variations in the independent variable.

Independent Variable

In an experiment, the variable that is changed or controlled to test its effects on the dependent variable.