I had the same exact question on flvs my teacher was Ms Guerrier
well anyway
Hola <span>Sr. y Sra. Pérez como esta usted
hola </span><span>Sra. Cólon</span><span> como estas usted
hola marco como estas</span>
Answer:
C, has visitando mi casa.
Answer:
im not that advanced with spanish yet but ser means "to be"
Explanation: