Explanation:

Answer: The correct answer is option 'B', conjunction.

Explanation:

In the given sentence, the word "because" is used to indicate the reason or cause of an action. It connects the independent clause "I helped him" with the dependent clause "I liked him".

Here's a breakdown of the sentence:

- "I helped him" is the independent clause. It is a complete sentence on its own and expresses a complete thought.
- "Because I liked him" is the dependent clause. It cannot stand alone as a complete sentence and relies on the independent clause for its meaning.

Conjunction:

A conjunction is a word that connects words, phrases, or clauses. It shows the relationship between the connected elements. In this case, "because" is used as a subordinating conjunction.

Subordinating Conjunction:

A subordinating conjunction connects a dependent clause to an independent clause. It introduces the dependent clause and establishes its relationship to the independent clause. In this sentence, "because" introduces the reason for the action expressed in the independent clause.

Examples:

Here are a few more examples of sentences using "because" as a conjunction:

1. I went to bed early because I was tired.
2. She missed the bus because she overslept.
3. They canceled the game because of the rain.

In each of these examples, "because" connects the reason (dependent clause) to the action or situation (independent clause).

Conclusion:

In the sentence "I helped him because I liked him," the word "because" is used as a conjunction. It connects the reason (I liked him) to the action (I helped him) and shows the cause-and-effect relationship between them.