Answer:
100%
Step-by-step explanation:
My biology teacher taught me the FOIL method. F=first, O=outside, I=inside, and L=last.
TT x tt
The first letter of each parent together would be Tt, T=tall so the plant would be tall, 25%
The outside letter of each parent together would be Tt, T= tall so the plant would be tall, 25%
The inside letters of each parent together would also be Tt, T=tall so the plant would be tall, 25%
The last letter of each parent together would also be Tt, T=tall so the plant would be tall, 25%
Each outcome has a T, and that is dominant so therefore, the plants will always be tall. You could also think about it as a letter has to be passed down to each child and the first plant only has capitals to pass and the second only has lowercase to pass down.
100% of the offspring will be tall.