Final answer:
The synonym for 'grumble' is 'complaint.' It refers to an expression of dissatisfaction, similar to a grumble, which denotes muttering discontent. The words 'criticize,' 'dedication,' and 'specific' do not share the same meaning as 'grumble.'
Step-by-step explanation:
The synonym for "grumble" is c. Complaint. When we consider the definition of "grumble" as a verb, it refers to expressing one's displeasure or dissatisfaction about something, which is often done in a muttering or lowly audible manner.
This is synonymous with a complaint, which is also an expression of dissatisfaction or annoyance. The other options provided, such as criticize, dedication, and specific, do not serve as synonyms for grumble because they convey different meanings.
'Criticize' usually means to indicate the faults of someone or something in a disapproving way, 'dedication' refers to the commitment to a task or purpose, and 'specific' means clearly defined or identified. To practice understanding the use of 'g' in words, you can review by underlining the letters that spell 'g' in the following words: disagreement, angled, gasoline, designate, argued, and angrily.