Answer and Explanation:
As per the data given in the question,
3 of the above items will appear as a cash inflow from investing activities.
These are as follows :
1. Collection of loan receivable.
2. Cash sale of delivery truck at book value.
3. Sale of a security held as an available-for-sale investment.
Any gain or loss on sale of long term asset is an operating activity although any purchase or sale of a long term asset is come under the investing activities.
Loan receivable is an asset too therefore, it will be shown under investing activities.