Rihanna.

Sweet or Sour?

Sweet

Firefox or Chrome browser 

Chrome

Korean / Chinese dramas?

Korean

Chocolate covered nuts or normal nuts 

Normal nuts (from me both are ughh...but chocolate ones are double ughhs)

chocolate or vanilla 

Chocolate 

Kim Soo Hyun or Kim Jisoo

(if you're talking about the male SK actors) Kim Soo Hyun (Ji soo needs better roles!! - he would be great)

Life or death situation: Goong or Boys over Flowers

BOF

Pancakes or waffles 

Pancakes

Rainy Days or Sunny Days

Rainy days

Investment in stock market or money kept in saving bank account

Investment in stock market ... even better would be real estate. 

Watching dramas from your laptop/Tv or your phone?

Watching dramas from your laptop/Tv 

Olive green suits or burgundy suits on men

Burgundy (When done correctly)

High school dramas or Adults Drama (Adult as in age of main characters just to be clear) :D 

Adults drama

A ML or a FL as main character/protagonist 

ML

Melo Vs Fluffly