Factors such as the need for improved reliability and security in postal systems and new government regulations represent important challenges for in the global market.

direct marketing

Explanation: direct marketing is a form of marketing strategy that involves presenting information about a business, its product, or service to its target audience without the use of an traditional advertising middlemen. Also known as direct response marketing, some examples include emails, online adverts, flyers, database marketing, promotional letters, newspapers, messaging, magazine adverts, coupons, phone calls, postcards, websites, etc. With its benefits comes some disadvantages or challenges some of which are the need for improved reliability and security in postal systems, new government regulations, delivering the right offer at the right time to the right person in the right way, it requiring expertise in several areas in order to achieve success etc.

d. automatic stabilizers.

explanation:

odd consecutive integers are odd integers that follow each other. they have a difference of 2 between every two numbers. if n is an odd integer, then n, n+2, n+4 and n+6 will be odd consecutive integers. the first number in the pattern is always the variable on its own or in this case, "n". examples.