Open Access refers to a set of principles on how scholarly information is disseminated online, free of cost or other barriers, and comes in a number of varieties, often presented in a color-coded naming system. The most familiar and common of these are the Diamond, Gold, and Green (or Hybrid) types of open access.

Scientific freedom is alive and well! You are not required to publish open access. Questions to consider are:
Is this the best journal for your work? Some journals are gold and therefore you have to pay the fee.
Is this the only option? Do you have funds to pay an APC? If no, archive the manuscript for free. This will still satisfy public access requirements.
What do your co-authors want? Often you aren't publishing solo and need to consider all authors.
. Here are other ways to support open access: