code: public Activated highestActivatedTerm() {
          Activated maximumTerm = null;
          double maximumActivation = Double.POSITIVE_INFINITY;
          for (Activated activated : terms) {
              if (Op.isGt(activated.getDegree(), maximumActivation)) {
                  maximumActivation = activated.getDegree();
                  maximumTerm = activated;
              }
          }
          return maximumTerm;
      }
docs: Iterates over the Activated terms to find the term with the maximum
  activation degree
  
  @return the term with the maximum activation degree