<u>Answer:</u>
This is a good example of the usage of <em>se</em> as an <u>indirect complement</u>, in order t<u>o substitute</u> the indirect complement <u>le</u><u> </u>or <u>les</u>.
What does this mean?
Let’s begin by explaining that <u>the Indirect Complement </u>of a sentence is the person, animal or thing that <u>indirectly receives the action of the verb</u>.
To identify it in a sentence, we must ask to the verb <em>¿a quién?</em> (to whom?) Or <em>¿para quién?</em> (for whom?)
In the case of the sentence (Yo) Voy a leer el periódico a Roberto (I'm going to read the newspaper to Roberto) if we ask ourselves the following question:
¿a quién voy a leer el periódico?
(To whom am I going to read the newspaper?)
The answer is:
A Roberto
(To Roberto)
Being Roberto (him) who <u>indirectly receives the action
</u>
Now, the <u>Indirect Object Pronouns</u> <u>replace a word or phrase, which in the sentence fulfills the function of </u><u>indirect object</u>.
They are written <u>before the verb</u>, when it is <u>conjugated</u>.
<u>These pronouns are listed below:
</u>
1st person singular Yo: <u>me
</u>
2nd person singular (informal) Tú: <u>te </u>
2nd person singular (formal) Usted: <u>le
</u>
3rd person singular Él/Ella/eso/esa: <u>le
</u>
1st person plural Nosotros: <u>nos </u>
2nd person plural Ustedes (In latinAmerica): <u>les</u>
2nd person plural Vosotros (In Spain): <u>os</u>
3rd person plural Ellos/Ellas: <u>les</u><u> </u>
Then, returning to the sentence <em>Voy a leer el periódico a Roberto</em>, knowing that the <u>indirect complement</u> is Roberto, who is the 3rd person singular Él (he); the indirect object pronoun in Spanish is <u>le</u>.
In that way the initial sentence changes to:
Le voy a leer el periódico (a Roberto)
I'm going to read the newspaper (to Roberto)
This is where the <u>personal pronoun</u> <em>se</em> comes in, as an<u> Indirect Complement</u>, and replacing <u>le</u> or <u>les</u> (indirect object pronouns), immediately followed by one of the following pronouns <u>depending on the direct object:
</u>
lo (singular masculine)
la (singular femenine)
los (plural masculine)
las (plural femenine)
In this case<u> lo</u> is used because Roberto (he) is <u>masculine and singular</u>, therefore the sentence:
Le voy a leer el periódico a Roberto
Changes to:
<h2 /><h2>Se lo voy a leer
</h2>
Which is finally the <u>right answer</u>.