Which Metal Is Sufficiently Concentrated in the Oceans So That

question 21

Multiple Choice

Which metal is sufficiently concentrated in the oceans so that it is currently extracted commercially?

• A) aluminum
• B) copper
• C) magnesium
• D) iron

---

Definitions:

Predicate

A component of a sentence or clause that has a verb and expresses something regarding the subject.

Syllogism

A deductive argument with two premises and a conclusion.

Predicate Class

A group of elements that share a common property or attribute, as described by the predicate in a logical statement or equation.

Proposition

An utterance or claim that articulates an opinion or estimation, which could be accurate or inaccurate.