The core processes in a value chain must add value for the external customers, while support processes
a. are directly involved in service to the external client. b. are also part of the value chain. c. include the order-fulfillment process. d. do not add value to the customer.

B. are also part of the value chain

Explanation:

Value chain comprises two activities i.e primary activities and support activities.  

The primary activities include those activities which add the value to the customer through inbound logistics, outbound logistics, operations, and marketing sales and services

Whereas the support activities are those activities who support the primary activities. It involves procurement, firm infrastructure, etc

the amount of money you earn by working is your income.

the percentage of people actively looking for a job is called unemployment.

staple goods and impulse goods are examples of convenience products which consumers usually  buy. these products can be bought almost everywhere and are readily available for purchase. usually, the quality and price of the product are not considered. examples of staple goods are sugar and bread, while impulse goods examples are chocolates and magazine.