Final answer:
Under the ERISA 404(c) provisions, a participant exercises independent control over their individual account plan assets. The plan trustee is still liable for any breach or loss that occurs as a result of the participant's direction. However, the trustee would not be liable if the participant's directions could result in a loss that exceeds their account balance.
Step-by-step explanation:
Under the ERISA 404(c) provisions, a participant (P) exercises independent control over their individual account plan assets. However, this does not make the participant a fiduciary with respect to the plan. The plan trustee (T) is still liable for any breach or loss that occurs as a result of the participant's direction.
In this situation, T would not be liable for any loss or breach under ERISA if P's directions could result in a loss that exceeds P's account balance. ERISA 404(c) provides that the participant bears all investment-related risks, including the risk of loss.
However, if P's directions caused T to engage in a prohibited transaction, such as purchasing securities from a party-in-interest, T would be liable for any loss or breach under ERISA.