Short Answer:

1. Conjugate the verb preferir in all forms in the Present Tense.
2. What takes place in the conjugation that makes this verb a stem-changing verb?
(4 points)

1. The verb preferir is conjugated as follows in the Present Tense:

- Yo prefiero
- Tú prefieres
- Él/Ella/Usted prefiere
- Nosotros/Nosotras preferimos
- Vosotros/Vosotras preferís
- Ellos/Ellas/Ustedes prefieren

2. The stem-changing in the verb preferir occurs in the second and third person singular forms (tú and él/ella/usted), where the -e in the stem changes to -ie. This is a characteristic of stem-changing verbs in the present tense, where the vowel in the stem changes in certain forms.

1. Conjugation of the verb preferir in the Present Tense:

- Yo prefiero (I prefer)
- Tú prefieres (You prefer)
- Él/Ella/Usted prefiere (He/She/You(formal) prefers)
- Nosotros/as preferimos (We prefer)
- Vosotros/as preferís (You all prefer)
- Ellos/Ellas/Ustedes prefieren (They/You all(formal) prefer)

2. The stem-changing verb preferir undergoes a stem change in all forms except for nosotros and vosotros. In this verb, the e in the stem changes to ie. This means that in the present tense conjugation, the vowels in the stem of the verb change to different vowels in some forms.

To conjugate the verb preferir in the Present Tense, you should follow these steps:

1. Start by identifying the stem of the verb. In the case of "preferir," the stem is "prefer-."

2. Remove the "-ir" ending to have the stem.

3. Add the appropriate endings to the stem based on the subject pronoun (yo, tú, él/ella/usted, nosotros/nosotras, vosotros/vosotras, ellos/ellas/ustedes). The endings in the Present Tense are:

- Yo: -o
- Tú: -es
- Él/Ella/Usted: -e
- Nosotros/Nosotras: -imos
- Vosotros/Vosotras: -ís
- Ellos/Ellas/Ustedes: -en

4. Add the stem-changing rule when conjugating "preferir." The stem-changing pattern in this verb is e→ie. This means that the "e" in the stem changes to "ie" in all forms except nosotros/nosotras and vosotros/vosotras.

Now, let's apply these steps to conjugate "preferir" in all forms in the Present Tense:

- Yo prefiero
- Tú prefieres
- Él/Ella/Usted prefiere
- Nosotros/Nosotras preferimos
- Vosotros/Vosotras preferís
- Ellos/Ellas/Ustedes prefieren

The conjugation of "preferir" in the Present Tense involves a stem-changing rule. The "e" in the stem changes to "ie" in all forms except nosotros/nosotras and vosotros/vosotras. Stem-changing verbs have this characteristic where certain vowels in the stem change when conjugating according to the subject pronouns. This alteration in the stem is what makes "preferir" a stem-changing verb.