A(n) is the development of a product that is closely related to one or more products in the existing product line but is designed specifically to meet somewhat different needs of customers.
a) product modification
b) line extension
c) quality modification
d) functional development
e) aesthetic extension

b) line extension

Explanation:

this is definition so I can't tell you any clearer.

if you wish to deeper on what is line extension, I suggest you to read more in this link https://en.wikipedia.org/wiki/Product_line_extension

c

explanation:

c because the item on a bank statement is also referred to as an account statement. in addition, it provides the beginning balance, ending balance, statement date, transaction date for each transaction, payee, customer name and address, statement period, the account holder's account number, and the bank's customer service number