rainfall amounts each week tiny organisms in pond water the high temperatures each day the amount of growth in a plant
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Russell wants to observe changes in nature over the next few months. What can a thermometer help Russell investigate?
Possibilities:
- rainfall amounts each week
- tiny organisms in pond water
- the high temperatures each day
- the amount of growth in a plant

the high temperatures each day