You didn’t attach the passage. In order to infer, we need background context.
1. The dog is playing with her.
You need to use the pronoun her because it is the object of this sentence. The pronoun she can only be used as the subject of a particular sentence, and in this one, we can see that the subject is the dog, therefore, it cannot be her. So instead, you should use the object pronoun, which is her.
2. The librarian asked my sister and him if they would talk more quietly.
The explanation for this example is the same - since the boy is the object of the sentence (along with my sister), you need to use the objective pronoun, which is him. The pronoun he is used as a subject of a sentence, and we can see that the subject here is the librarian, so it cannot be the boy.
Answer:
I am pretty sure it would be the second one.
Explanation:
I think this because the title of the paragraph is "Life Without Gravity" would mean to live without gravity, and the second one is talking about astronauts living without gravity.
Answer:
You only added 3 so all three?
Explanation:
Answer: False
Explanation:
David Ricardo formulated the law of comparative advantage which was published in 1833. The holds that under free trade, an agent will produce more of and consume less of a good for which they have a comparative advantage.
According to David Ricardo, no country has absolute advantage when it comes to trade and he suggested that countries should focus more on producing goods they have comparative advantage in and import those with higher opportunity cost.