Question

Señorita, ¿qué ____________________ Ud. en la tienda? (buscar)
a.
busca
c.
busco
b.
buscas
d.
buscan

Answer 1

It would be A. busca

Answer 2

i think it would B. 

but it could be A. 

i would go with B.

so my final  conclusion is B.buscas