question 5\n5. ellos _________ estudiantes de español.\nsoy\nson\neres\nsomos

Brief Explanations:

In Spanish, "ellos" is the third - person plural subject pronoun. The verb "ser" (to be) conjugates as "son" for "ellos/ellas/ustedes". "Soy" is for "yo" (I), "eres" is for "tú" (you - informal singular), and "somos" is for "nosotros/nosotras" (we).

Answer:

B. son