A. 140mL 7. Assume you hav?conducted an investigation to determine which soil retained the most water. You __ have recorded your results. Which soil retained the most water? A. Sample A-Poured 200mL -Collected 100mL B. Sample B -Poured 200mL-Collected 70mL C. Sample C - Poured 200mL -Collected 150mL D. Sample D -Poured 200mL -Collected 130mL E. Ail F. None

## Step 1<br />The problem is asking us to identify which soil sample retained the most water. The water retention of a soil sample is determined by the amount of water that is not drained out after pouring a certain volume of water on it. <br /><br />## Step 2<br />In this case, we are given four soil samples (A, B, C, D) and we are asked to compare the amount of water retained by each sample. The amount of water retained is the difference between the volume of water poured and the volume of water collected.<br /><br />## Step 3<br />For Sample A, the volume of water poured is 200mL and the volume of water collected is 100mL. Therefore, the amount of water retained is \(200mL - 100mL = 100mL\).<br /><br />## Step 4<br />For Sample B, the volume of water poured is 200mL and the volume of water collected is 70mL. Therefore, the amount of water retained is \(200mL - 70mL = 130mL\).<br /><br />## Step 5<br />For Sample C, the volume of water poured is 200mL and the volume of water collected is 150mL. Therefore, the amount of water retained is \(200mL - 150mL = 50mL\).<br /><br />## Step 6<br />For Sample D, the volume of water poured is 200mL and the volume of water collected is 130mL. Therefore, the amount of water retained is \(200mL - 130mL = 70mL\).<br /><br />## Step 7<br />Comparing the amounts of water retained by each sample, we can see that Sample B retained the most water, with 130mL.