Grammar fix
a viable alternative
a workable or practical option
an option or solution that is realistic, practical, and likely to succeed, especially when compared to other possibilities that may not be as effective or achievable.
Hear it in context
Notice where the phrase sounds natural.
For people who can't drive, cycling is a viable alternative to commuting by car.
In my opinion, investing in renewable energy is a viable alternative to relying on fossil fuels, as it is both sustainable and increasingly affordable.
Fix the pattern
One small grammar move makes it sound right.
Not: a viable alternative of the current system.
Say: a viable alternative to the current system.
'An alternative TO something', not 'of'.
Which sounds natural?
Tap the one a native speaker would say.
'Feasible and practicable substitute course of action' is bloated; 'a viable alternative' is enough.
Build natural chunks
Words that usually travel with it.
a viable alternative to
- to
- offer
- no
- provide