Answer:
C
Step-by-step explanation:
First of all, you're talking about definite articles, not pronouns. In English, there is only one definite article, the word "the". In Spanish, there are 4: él, la, los, and las.
él = singular masculine
la = singular feminine
los = plural masculine
las = plural feminine
The definite article you use depends on the noun you are using with it. In Spanish, hamburgers are las hamburguesas and sandwiches are los sandwiches. Since hamburguesas is plural and feminine you would use las and the same applies to sandwiches. Therefore the answer is las and los.