Answer:
The correct answer is instrumento.
Step-by-step explanation:
The verb tocar, in Spanish has equivalence with the verbs to play and to touch in English.
When we talk about instruments, the right thing is to say that a person "Toca un instrumento".
Next I will show you how to conjugate the verb to touch, for the different people of the present in Spanish:
Yo toco la guitarra
Tú tocas la guitarra
Él/Ella/Usted toca la guitarra
Nosotros tocamos la guitarra
Ellos/Ustedes tocan la guitarra