Answer:
The difference in these two transaction is that first is investing activity while the later is financing activity.
Explanation:
The first activity is purchasing 100 shares of Jenkins stock.
The purchasing of stocks are included in the investing activities.
The second activity is selling of the stocks, this is included in the financing activity
The financing activities are transactions with the investors which affects the equity
Hence,
The difference in these two transactions is that first is investing activity while the later is a financing activity.