What would be better: 1. To buy the shares of the company or 2. To buy all its assets.

Both options are valid. A person / investor who want to exercise managerial control would go for buying all assets / more than50% shares. On the other hand investor who does not want to get involved in day to day affairs of the company would invest in Shares. In the end it all depends on the attitude of investors.

The answer depends on the company itself. Is it a reputable company or there is something fishy about it. If you have not too much trust and information about it you can buy only shares and monitor the progress taking place.

Multiple Investments

both of them

You must buy the two together

It Depending on profitability, required liquidity and nature of business and which will be relevant at specific time for Each option

I believe it depends on the control and risk you are willing to undertake,the more the influence the better to acquire assets.

Both are beneficial..Thanks for the invitation.

Both will cost the same, theoretically.

it depends on long term investment or short term. shares can be sold at any time in a Stock Exchange

AGREE WITH MR KARMAN ANSWER 

BOTH ARE VAILD