E) Two students wanted to investigate the effect of concentration of acid on albumen For this investigation, suggest a suitable:
Variable to change:

Variable to measure or observe:

Variable to control:

I need full answers please

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.