The correct answer would be "están jugando"
Ana y Valeria están jugando en la playa which translates to They are playing on the beach.
—Across
2.) facíl
4.) clase
5.) tarea
8.) fisica
12.) arte
14.) aburrida
16.) septimo
17.) ingles
18.) enseña
—-Down
1.) computadoras
3.) ciencias
6.) almuerzo
7.) argollas
9.) horario
10.) quinta
11.) matematicas
13.) tercero
You use saber to describe a fact, information, or how to do something.
And you use conocer to say that you are familiar with something either a person, place, or thing.
Basically saber means to know of something, and conocer means to be familiar with someting.