I need help with this question

According to the elements of style, which sentence is written in active voice?

Which key function of a business involves finding, targeting, attracting, and connecting with the right customers? (blank) is one of the key functions of a business. it involves finding, targeting, attracting, and connecting with the right customers

Is this inappropriate language,” i am something. but what i am,and what i’ll be,are two countries at war at present”? ? if so,how can i write it in formal