Which term refers to a u. s. foreign policy tool in which the government imposes trade penalties, tariffs, import and export quotas, and trade barriers on other nations? a) containment b) humanitarian aid c) economic sanctions d) military intervention

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering