B. first person. this allows you the see what and character is thinking and feeling
When you read a speech there is no emotion, as you watch a speech you can see and hear how the person feels and see their body language and how they truly feel on the topic.
Studies are showing that excessive noise can damage hearing, disrupt sleep, induce stress and generally lower our quality of life. Noise tops the list of complaints people raise about the neighborhoods in which they live, and the hotels in which they spend vacation or business time.
The correct answer is on the contrary.
If something is contrary, it means that it is the opposite, completely different from something else. If you want to show a contrasting (opposing, different) thought, then you can use the phrase on the contrary. You can state one thing, add on the contrary, and then explain something completely different.
This is not my area of expertise but as far as I understand we refer to a conditioned sound change if a phoneme when in a certain environment becomes another phoneme - there is a certain condition that propells the change. On the other hand we refer to an unconditioned sound change if all phonemes of, for example, two different kinds are merged into one phoneme - there is no condition as it happens in all instances, and ultimately there is a reduction in the number of phonemes as one is substituted for another.