Simplify a - {b - [c - (d - e) - f] - g}.

a + b + c - d + e - f + g

a - b + c - d + e - f + g

a + b + c + d + e - f + g

a - b + c - d + e + f - g

a - {b - [c - (d - e) - f] - g}

= a - {b - [c - d + e - f] - g}

= a - {b - c + d - e + f - g}

= a - b + c - d + e - f + g.

so ur answer is the third one C there all equivalent so the last one is the answer choice so there u go