Question

choose the correct conjugation of the verb:

it costs
costa
cuestan
cuesta
coste

Explanation:

Identify the verb and subject

The English phrase is "It costs". The Spanish verb for "to cost" is costar. The subject "it" corresponds to the third-person singular form (él/ella/usted).

Apply stem-changing rules

The verb costar is an \(o
ightarrow ue\) stem-changing verb in the present tense.

• The stem cost- changes to cuest- in all forms except nosotros and vosotros.
• For the third-person singular, the ending for -ar verbs is -a.
• Combining the changed stem cuest- with the ending -a yields cuesta.

Evaluate the options

• costa: Incorrect because it does not apply the required \(o

ightarrow ue\) stem change.

• cuestan: Incorrect because it is the third-person plural form ("they cost").
• cuesta: Correct third-person singular form ("it costs").
• coste: Incorrect subjunctive or noun form.

Answer:

• (A) costa
• (B) cuestan
• (C) cuesta (Correct answer)
• (D) coste