How do I check parameter "param[:some_value]" in Ruby

I know some ways to check if parameter is not nil

if param[:some_value]
if param[:some_value].present?
if !param[:some_value].nil?    #unless param[:some_value].nil? 
if !param[:some_value].blank?  #unless param[:some_value].blank? 

Which one is correct and most popular? What is the difference between them? I'd rather use if param[:some_value] because it is simplest and shorterst.