CTET 2 Math and Science 21 Dec 2021 Paper

A student prepared a report about the garden visit in which she writes, "I noticed most of the plants and trees were without flowers & fruits. This may be due to hot summers and no rain for last 2-3 months”. Which of the following processes of science are involved in this report?
a) Observing
b) Hypothesizing
c) Predicting
d) Estimating