Need Investment Advice for Someone I know

If returns and tax liability are the only parameters then unsecured or P2P lending is the way to go

Get a fee only Advisor

Although it depends on many factors of risk appetite age and others.

May be go for a commercial property you can explore propertyshare website. As per them they generate 9%rental yield with appreciation. Would recommend to reach to financial advisor to understand risks and returns.

I feel equity can be a good option. A good mutual fund (active/index) can fulfil the goals. LTCG of 10% is best taxation benefit.