How do i use lo and la in these sentences?

If you wanted to say something in spanish, what would you say?

Lloraba mucho cuando niño. a. era b. fui c. estaba d. es

"in english, write six to eight sentences comparing cultural aspects of greetings in spanish-speaking countries with greetings in your own culture. use what you learned in the lessons to tell about three differences and three similarities. discuss non-verbal greetings and how respect is shown. you may also include verbal greetings, but do not simply translate phrases from one language to another."