Answer:
The polar heads interact with water; the nonpolar tails do not
Step-by-step explanation:
A phospholipid contains an ionic head that contains the phosphate group and the nonpolar or hydrophilic tail that is comprised of the alkyl moeity in the phospholipid.
The hydrophilic ionic head can interact with water, while the hydrophilic alkyl tail do not interact with water, hence the answer above.