Why is brutus' involvement in caesar's assassination especially tragic?
a) brutus did not participate in the actual assassination; he only plan it.

b) brutus did not plan the assassination; he only carry it out

c) brutus did not plan the assassination; he did not carry it out

d) brutus delivered the final blow and assassination his friend

D)
Brutus was a friend to Caesar during the earlier part of Caesar's career as a general. As Caesar worked to gain more and more power, Brutus sided with the Senate and the Roman elite in the Republic against Caesar's faction. He and another were recruited to assassinate caesar, with Brutus delivering the killing blow to his former friend.

A is correct because you shouldn't put any punctuation before 'because' so it shouldn't be at the beginning of the sentence or after a comma, etc.