Answer:
1. Ilógico (illogical)
2. Lógico (logical)
3. Ilógico (illogical)
4. Ilógico (illogical)
5. Lógico (logical)
Explanation:
1. The personal life of Marcela and Adrian is not mentioned, the text is only talking about the party, we could assume they go to the same university but it is not certain, they could be neighbors.
2. A formal party usually has appetizers, champagne and desserts, so according to the description of it, we can infer is a formal party.
3. In the paragraph: <em>"También vamos a tener </em><u><em>tu</em></u><em> postre favorito, pastel de chocolate" = </em><em>W</em>e will also have <u><em>your</em></u> favorite dessert, chocolate cake; is clearly stated that Marcela is referring to Adrian, given she is inviting him. Also the <em>possessive adjective, </em><u>your</u> in Spanish is referring to the second person singular, <u>tu</u>.
4. That information is incorrect, because Marcela mentions that Roberto is friend of Alfonso since they were kids. "<em>También vamos a darle una sorpresa a mi bisabuelo: </em><em>su mejor amigo de la </em><u><em>niñez</em></u><em>, Roberto</em><em>..." = We are also going to give my great grandfather a surprise: </em><em>his </em><u><em>childhood</em></u><em> best friend, Roberto...</em>
5. At the beginning of the invitation <em>"Adrián, te quiero invitar a la fiesta que vamos a hacerle a mi bisabuelo </em><u><em>Alfonso</em></u><em> por </em><u><em>su </em></u><em>cumpleaños" = Adrián, I want to invite you to the party we are going to make for my great grandfather </em><u><em>Alfonso</em></u><em> for </em><u><em>his</em></u><em> birthday. </em>It is stated that the celebration is on behalf of Alfonso.