Question 11

Memory capacity in mammals is directly proportional to brain size.

This statement proposes a relationship between two variables, suggesting that as one increases, the other does as well, which is characteristic of a hypothesis.

A) Atoms are composed of smaller particles called protons, neutrons, and electrons.

This statement is a fact based on established scientific knowledge regarding atomic structure. It does not propose a testable relationship or prediction, thus it does not demonstrate a hypothesis.

B) Energy can be transferred or transformed but not created or destroyed.

This statement articulates the law of conservation of energy, which is a fundamental principle in physics. It presents a universal truth rather than a testable hypothesis.

C) During any natural interaction, matter is neither created nor destroyed.

Similar to option B, this statement reflects the law of conservation of mass. It describes a principle that has been consistently observed, rather than proposing a testable relationship between variables.

D) Memory capacity in mammals is directly proportional to brain size.

This statement suggests a specific predictive relationship that can be tested through research. It implies that increases in brain size would lead to increases in memory capacity, making it a clear hypothesis.

Conclusion

The correct answer, D, clearly articulates a testable relationship between brain size and memory capacity, thereby fitting the definition of a hypothesis. In contrast, options A, B, and C present established facts and principles that do not allow for prediction or testing, thus failing to qualify as hypotheses.