Influences are factors that affect someone or something, either positively or negatively. an influence can be either or

strong; weak

interesting; boring

internal; external

personal; professional

An influence can be either "internal" or "external".

Influence is the ability to importantly affect somebody or something. In the event that somebody impacts another person, they are changing a man or thing in an aberrant yet vital way.  

Now and then a man who influences another doesn't plan to have any impact, however once in a while they are utilizing impact to profit themselves.  

External influence is outside impacts that can affect a business. Different outside components can affect the capacity of a business or speculation to accomplish its vital objectives and targets. These outer variables may incorporate rivalry; social, lawful and mechanical changes, and the financial and political condition.  

Internal influences refers to inward qualities and shortcomings that an association shows. Inward factors can unequivocally influence how well an organization meets its goals, and they may be viewed as qualities on the off chance that they favorably affect a business, yet as shortcomings in the event that they deleteriously affect the business.

the correct answer is 4 (giveaways to the public)

something that is given away or gave out for free. an occasion at which things are given away to free. something that is evident or obvious; something that uncovers a mystery.

it could be be in a form of a lucky draw as well. these the company events gather more audience for their pr and it also increases their ratings as well. this is a way to attract more customers towards themselves.

yes, it is pretty much the same thing, which is cool. : )