A part of the sentence may or may not have an error. Find out which part has an error and mark that part as your answer. If there are no errors, mark 'No error' as your answer. Speculation is rife about who minister deserves a promotion to make up the missing third in the troika of Deputy Prime Ministers.?

Option 4 : Speculation is rife about who

The correct answer is Option 4). 'Speculation is rife about which' should be there in place of 'Speculation is rife about who'

[ alt="bulb (3)" src="//storage.googleapis.com/tb-img/production/20/08/bulb%20%283%29.png" style="width: 25px; height: 25px;"> The concept is: 

• 'Which' is used to ask for the identification of a particular person or a particular thing in a group.
• 'Who' is the subject of a verb (i.e. the one doing the action).
• Let's see some examples: 
  • Which is your favorite Simpsons episode?
  • Who’s there?

[ alt="key (2)" src="//storage.googleapis.com/tb-img/production/20/08/key%20%282%29.png" style="width: 25px; height: 25px;"> Important point:
Troika: a group of three people working together, especially in an administrative or managerial capacity

The correct sentence is: 'Speculation is rife about which minister deserves a promotion to make up the missing third in the troika of Deputy Prime Ministers.'