hey, i am working on my homework and want to know the correct answer to these questions so I can study and understand this better if you can kindly point out the correct answer. thank you

1.Which can help increase your share of customers? Offer a greater variety of products/ Offer promotions to encourage customers to buy more products/ Train your employees to cross-sell products when customers may not be interested in some of your products/ all of the above

2.Which is NOT part of a company's micro-environment? The company itself/ The company's suppliers/ The national economy as a whole/The company's competitors

3.In marketing questionnaires, which is an open-ended question? How many times per week do you eat at restaurants?/ What is your gender?/ What do you consider most important in choosing a car?/ Do you prefer Delta or United airlines?

4.Which of the following is NOT a service industry?Automobile sellers/ Car rentals/ home repairs/ Airlines