The phrase "advocate an alternative" is correct and usable in written English.
You can use it when discussing the support or promotion of a different option or solution in a debate or discussion.
Example: "In the meeting, she chose to advocate an alternative to the proposed budget cuts, emphasizing the need for investment in education."
Alternatives: "promote an alternative" or "support an alternative".
In this paper, we argue that this strategy tends to fall short of establishing a reliable "ground truth," and we advocate an alternative in vitro-like methodology for calibrating available bandwidth estimation tools that has not been widely used in this context.
We advocate an alternative metric to h, namely residual h, which we call Research Status.
You may meet punks that support the two-party system in the United States, some that advocate an alternative party, some that advocate rebuilding the system, and even some that want to see a fascist society play out.
Dr. Carson also advocates an alternative to the Affordable Care Act.
Just Space advocates an alternative to demolition: it supports organic development, rather than trying to "build change".
Arguing that "Christmas and Thanksgiving are too close together to be celebrated by similar blowouts," Trillin advocates an alternative Thanksgiving meal of duck with flowering chives.
Towards the end of the 70s my own women's group, Red Rag, which published a feminist and Marxist journal, advocated an "alternative feminist economic agenda".
Skocpol advocates an alternative to cap-and-trade called cap-and-dividend, because it would put the fees levied on carbon emissions into the hands of individual voters, not companies.
In the West Wing, beyond Vice President Joseph R. Biden Jr., who has advocated an alternative strategy to the troop buildup, other presidential advisers sound dubious about more troops, including Rahm Emanuel, the chief of staff, and Gen. James L. Jones, the national security adviser, according to people who have spoken with them.
In this study, we advocated an alternative strategy that potentially rewired lipid metabolism by unprecedented mechanisms.
Mr Osborne said that those who advocated an alternative economic path could not explain recent improvements in the economic data.
