Three weeks ago I bought a roma tomato plant from Home Depot. It was probably about 8 inches tall. Since then, it was in my apartment for a few days and then my friend's apartment for about two and a half weeks (I was on vacation). It has not been planted yet.
I live in New Jersey, and it's been pretty humid these last few weeks.
When I got the plant back today, I noticed some funny spots, as well as some leaves that were dying near the base of the plant. The dying leaves are only on one branch. The spots are on a few branches, mostly clustered together, but most of the branches are fine. Pictures below. What is happening to this plant, and what can I do to save it?
Extra information, as per a request: I will plant it in the ground. The pot it is in now is about 6" across. The sunlight it was getting in my friend's apartment was indirect: next to a window, but the window was facing north so never direct sunlight coming in. I don't know how often or how much it was getting watered, but it was probably getting watered daily.