Kierra is trying to decide which brand of lettuce seeds she would like to use in her garden this summer. after researching, she picked the two best-known brands to test. she decides to test them by planting one of each seed in a small space in her yard; her observations will be recorded so she can compare.

She should not record her observations until the end of her test.

Explanation:

In order to get authentic results, Kierra must wait till the end of the experiment to conclude her results. This is because it might happen that a lettuce brand shows its characteristics in the later stages and the other lettuce brand shows its enhanced characteristics in the start stages. Hence, Kierra should not record her observations until the end of her test. Rather she should wait till the end stages and then record her observations.

a. hope i'm right

explanation:

6.4 cm (max) - 25 cm (min)