B, convey point of view through sound
Answer: A strict lockdown is better because it can control the virus so much better and the restrictions can end faster. A Smart lockdown can be comfortable for us because many things are open, it also means we will have longer lockdowns with more cases.
In terms of the first question, "They" would be an objective pronoun, but it should be noted that this does not have to be so. for the second, the answer is "my".