The answer is "rein" since that is the term for trying to take control of the horse. It is also one of the only words that makes sense when put into the blank in that sentence.
Where the question pleaseeee. I need some question to answer
Answer: race-to-the-bottom
Explanation: The race-to-the-bottom dynamic is a term used to describe a socio-economic policy aimed at retaining, improving and attracting economic activities and growth by employing tactics such as tax reduction on goods and businesses, deregulation of the business environment, applying subsidy on products and other related policies aimed at attracting investors. Race-to-the-bottom the bottom approach is often employed by competing nations or states whereby strict economic policies are often sacrificed in place of policies which would enable the states have a competitive edge over it's competitors.