Explanations:Subordinating conjunctions are used to connect a dependent clause to an independent clause, forming a complex sentence. In the given sentence, "He will come to the party you invite him," there is a need to connect the two clauses with a subordinating conjunction to avoid a comma splice and to clarify the relationship between the clauses.
A comma splice occurs when two independent clauses are joined by a comma without a coordinating conjunction. In this case, the sentence needs a subordinating conjunction to make it grammatically correct and to convey the intended meaning clearly.
Subordinating conjunctions include words such as "if," "when," "because," and "although." Each of these conjunctions serves a specific purpose in connecting clauses and establishing a particular type of relationship between them.
Option A uses "when" as the subordinating conjunction, which implies a temporal relationship. While this is grammatically correct, it does not capture the conditional nature of the sentence as well as "if" does. The sentence would read, "He will come to the party when you invite him," which suggests that the timing of the invitation is the key factor.
Option B uses "if" as the subordinating conjunction, which is the correct choice. "If" establishes a conditional relationship between the clauses, meaning that the person will come to the party on the condition that they are invited. The sentence reads, "He will come to the party if you invite him," which clearly conveys the intended meaning.
Option C uses "because" as the subordinating conjunction, which implies a cause-and-effect relationship. This does not fit the intended meaning of the sentence, as it suggests that the person's attendance is a direct result of the invitation, rather than a conditional response. The sentence would read, "He will come to the party because you invite him," which does not accurately represent the conditional nature of the relationship.
Option D uses "although" as the subordinating conjunction, which implies a contrast or contradiction. This does not fit the intended meaning of the sentence, as it suggests that the person will come to the party despite being invited, which is illogical. The sentence would read, "He will come to the party although you invite him," which does not make sense in the context.
Therefore, the correct answer is Option B: "He will come to the party if you invite him." This option uses the appropriate subordinating conjunction to establish a conditional relationship between the clauses, making the sentence grammatically correct and conveying the intended meaning clearly.