Answer:
The correct option is Meanwhile
Step-by-step explanation:
Transitions words, also known as transitions phrases, are words used to connect one idea to the next . Or in other words, they are used to help the reader progress throughout the text, from one idea to the next.
There are additive, adversative, causal and sequential transitions words, only to name a few.
In the particular case of the example provided, it could be said that the transitional word used to show sequence would be Meanwhile.