I don’t think you need a comma after old
The power of Boadicea is highlighted in this excerpt, using adjectives such as fierce, beautiful, and the imagery of "her golden hair blowing round her in the wind" giving the illusion of someone otherworldly, superior to common beings. Her speech rouses deep passion in the people, it's a call for action that is responded eagerly. Loyalty to the Queen is loyalty to the Country, the soldiers pledge their lives to her, hence they pledge their lives to fight for the country against the Romans. Her rage is mirrored and multiplied, till everybody is willing to die for her, to avenge their country.
The answer is C) mother's
I would say A, simple listing. It's not going in order of time, because they aren't dated in any way. I wouldn't say it was a cause and effect because you are just explaining each verbal form. It doesn't seem to have to be in that particular order, it's just how it's placed. You aren't comparing anything, and you none of them seem to be less important then the other. So I believe the answer would be A.