Answer:
Step-by-step explanation:
Basically there are three types of activities:
1. Operating activities: It includes those transactions which affect the working capital, and it records gain or loss on sale of fixed assets 
2. Investing activities: It records those activities which include purchase and sale of the fixed assets
3. Financing activities: It records those activities which affect the long term liability and shareholder equity balance. 
So, the classification is shown below:
a. Increase in inventory - deduct from operating activity 
b. Issuance of common stock - financing activity
c. Decrease in accrued liabilities - deduct from operating activity 
d. Net income - Add to operating activity 
e. Decrease in prepaid expense - add to operating activity 
f. Collection of cash from customers - an activity that is not used to prepare the cash flows statement through indirect method 
g. Purchase of equipment with cash - investing activity
h. Retained earnings - an activity that is not used to prepare the cash flows statement
i. Payment of dividends - deduct from financing activity
j. Increase in accounts payable - add to operating activity 
k. Decrease in accounts receivable - add to operating activity 
L Gain on sale of a building - deduct from operating activity 
m. Loss on sale of land - add to operating activity 
 n. Depreciation expense