The sum of all numbers is 50. Let's say there have been 50 events, for which property A, B or C holds.
In the center of A, B and C, there is the number 8, which would mean that for 8 out of 50 events, all three properties hold.
The chance of this happening is 8/50 = 4/25 = 0.16
Not do, avoid, cancel, stop.
The word indelibly means <em>not able to be forgotten.
</em>Having this in mind, the best choice would be the word permanently, which has the closest meaning to the word indelibly. <em>
</em>
All the words that tends to make it sound like an argumentative essay. So basically, when you talk about a narrative essay it should be written in an organized way with the goal of just telling a story and not trying to be persuasive. First pronouns should be used.