Answer:
D. All of these
Explanation:
Mark should control (or keep constant) the location of the plants, the amount of water the plants receive daily, and the amount of fertilizer the plants recieve daily. The only variable that should change is the type of fertilizer that is given to each plant.
During a scientific experiment, only variable should be changed by the investigator. All other variables should be kept constant.
Wordsworth used twinkle word to create an upbeat tone. Based on the choice, the question is about The Daffodils poem written by William Wordsworth because those 4 words were written on the poem. The "twinkle word created an upbeat tone because it described the subject's feeling when he/she found the Daffodils crowd.
Woah you are really good at art keep it up!
