F, I think you should take on the doubts and concur them!
The scientists are working to find a cure
It's an indicator that <span>he and Daisy are not a happily married couple.
</span>the telephone in this situation represents Tom's live outside the one With Daisy (Tom constantly cheat on Daisy in their relationship)
Daisy had a tell of the situation but never really do anything about it and everytime the phone rang, Daisy know that Tom can't wait to get away from her