Answers:
1. the first infographic describes how many jobs were lost in each month of 2019-2020.
2. the third infographic because it includes a visual of a mask, which is related to the subject, to make the infographic look more interesting.
3. the third infographic. it is presented in a simple line graph with clear points to mark the data sets.
4. the first infographic as it mentions the source of the statistics. it also explains the graph using a small text box to help viewers better understand.
[these answers are not the definite correct ones, i'm sure that multiple different answers will be accepted as long as you justify them! also, this isn't the full answer you should give, don't just copy everything word for word. it's simply a rough structure of the answer and you can elaborate more to substantiate your answer :)]
i can give explanations if you need them! hope this helps :D