Choose the correct alternative.A: What do you think about the phone printer?B: It’s the best invention __________ I’ve ever seen!whomwhoseØwho

1. Break Down the Problem

The sentence provides a context where a phone printer is being discussed, and the correct pronoun needs to be chosen to complete the statement grammatically.

2. Relevant Concepts

In English grammar, the choice of the correct pronoun depends on the role it plays in the sentence.

• "Whom" is used as the object of a verb or preposition.
• "Whose" indicates possession.
• "Who" is used as the subject of a verb.
• "Ø" (Ø) indicates that no word is necessary.

3. Analysis and Detail

In this case, the sentence is: “It’s the best invention __________ I’ve ever seen!”

• The clause “I’ve ever seen” implies the need for a subject to introduce this clause.
• Hence, "who" would logically complete the sentence if it were required.

Additionally, "the best invention" does not imply possession or require an object, thus:

• "whom" and "whose" are not appropriate here.
• "Ø" is appropriate if an explicit subject is unnecessary.

4. Verify and Summarize

The context does not require a subject pronoun; therefore, the correct choice would be "Ø." The sentence correctly reads as: “It’s the best invention I’ve ever seen!”

Final Answer

The correct alternative is: Ø