1. which of the following sentences contains an indefinite pronoun?

a. this is mary's necklace.
b. the team congratulated one another on a job well done.
c. her car's battery died because she left the lights on.
d. the flowers, which were just planted, need watering.

B. The word 'another' points to a specific noun, and its meaning is only understood because it was mentioned in previous context.

Ifound this on google “use commas to separate two or more coordinate adjectives that describe the same noun. be sure never to add an extra comma between the final adjective and the noun itself or to use commas with non-coordinate adjectives.” i hope this you for what your looking for