How fire can become widespread (4)
I believe the answer is:
'widespread' is the definition.
(rife can mean widespread or universal)
'how fire can' is the wordplay.
'fire' can be anagrammed to 'RIFE'.
Though, I am unsure how the anagram is indicated.
'become' acts as a link.
Can you help me to learn more?
(Other definitions for rife that I've seen before include "Prevalent" , "Endemic" , "Abounding" , "Excessively abundant" , "Overabundant" .)