He welcomed me to his house.

The correct answer is A. He said, “Welcome to my house.”

Option B is incorrect because “Welcome home” is typically said to someone who has just returned home, not to someone who is visiting for the first time.

Option C is incorrect because “Please come in” is a request, not a welcome.

Option D is incorrect because “You are welcomed here!” is a statement of fact, not a welcome.

A welcome is a greeting or expression of hospitality. It is typically used to greet someone who is visiting for the first time. In the context of the question, the speaker is welcoming the listener to his house. The most likely way for him to do this would be to say, “Welcome to my house.”