The question asks us to identify sentences that correctly express the meaning of the word "PORE". The word "PORE" has specific meanings as both a noun and a verb, and it is important to distinguish it from similar-sounding words like "pour".

Pore: Understanding Its Meanings

The word "PORE" can be understood in two primary ways:

• As a Noun: A minute opening in the surface of an animal (like skin) or a plant, especially one through which liquids, such as sweat or moisture, may pass. For example, skin pores or leaf pores.
• As a Verb: To read or study something with intense concentration or attention. This usage is often followed by the preposition "over," as in "pore over a book" or "pore over documents."

Pore: Analyzing Sentence A

Sentence A states: "I pored the water all over the plants."

In this sentence, the action described is related to the movement of water. The correct word to describe causing a liquid to flow is "poured," which is the past tense of the verb "to pour." The word "pored," which is the past tense of "to pore" (the word in question), means to study intently. Therefore, sentence A does not correctly use or express the meaning of the word "PORE." It represents a common confusion between "pored" and "poured."

Pore: Analyzing Sentence B

Sentence B states: "My brother has skin problems because of his clogged pores."

Here, "pores" is used as a plural noun, referring to the small openings on the surface of the skin. This usage directly matches the noun definition of "PORE," which refers to minute openings in a surface. When these skin pores become blocked or "clogged," it can lead to skin issues. Thus, sentence B accurately expresses one of the correct meanings of the word "PORE."

Pore: Analyzing Sentence C

Sentence C states: "The class pored over the museum's exhibit."

In this sentence, "pored over" is used as a verb phrase. It signifies that the class carefully and thoroughly examined or studied the museum's exhibit with great concentration. This usage perfectly aligns with the verb definition of "PORE"—to study or read something with intense attention. Therefore, sentence C also correctly expresses a meaning of the word "PORE."

Pore: Identifying the Correct Sentences

Based on our analysis of the word "PORE" and its usage in each sentence:

• Sentence A uses "pored" incorrectly; "poured" would be the correct word.
• Sentence B correctly uses "pores" as a noun referring to the small openings in the skin.
• Sentence C correctly uses "pored over" as a verb phrase meaning to study intently.

Both sentences B and C accurately convey a meaning of the word "PORE."