## 3 Results and Discussion
### Step 4: Interpretation  
The last step includes the interpretation of results and the establishment of product redesign strategies for the continuous improvement plan; the consistency of the analysis is also verified. In this case study, the interpretation is simplified, given that the objective is to illustrate the use of the results provided by the methodology. An example will be given for one of the impact categories, a process that can be extrapolated to the rest of the LCA+C2C endpoint indicators. Firstly, the techniques of the MICRO stage interpretation coincide with those carried out in conventional LCA and C2C. As the objective is to facilitate the interpretation process using the integrated LCA+C2C analysis, it is considered optional at this level. This analysis of the results will serve (at the meso level) as additional and detailed information for consultation in the life cycle impact improvement process, once the priorities for action on the causes are known. Secondly, the MESO interpretation process is divided into two parts, the analysis of causes and definition of action strategies, according to the cause-effect interaction. In the case of the sustainable mobility vehicle, the results indicate the need to prioritize action on the inputs (causes) in the following order:  
1. Action in QBS (0.28 LiC eq) modifying the use of resources in quantity or type, in the following order: Water (0.85 LiC eq); Materials (0.91 LiC eq); Energy (0.85 LiC eq); Land (0.90 LiC eq). 2. Action in QAS (0.40 LiC eq) modifying the use of energy in quantity or type. 3. Action in QHH (0.74 LiC eq) modifying the use of resources in quantity or type, in the following order: Materials (0.88 LiC eq); Human (0.92 LiC eq); Energy (0.95 LiC eq). 4. Action in QHS (0.80 LiC eq) modifying the use of resources in quantity or type, in the following order: Information (0.91 LiC eq); Human (0.93 LiC eq); Land (0.96 LiC eq). As with the micro level, the relationships of each resource (cause) with its impact are identified, and in the ICV, the type of input is known; it will therefore be easy to define improvement strategies. In this case, for example, the strategies according to outputs (impact and protected areas) should be prioritized in the following order for the QHH category: \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**FEI**} & \multirow{2}{*}{**Indicator**} & \multicolumn{3}{c}{**Historical Values (Pi)**} & \multicolumn{2}{c}{**Result (IP)**} \\ \cline{3-6}  & & **P0** & **P1** & **P2** & **IP\%** & **IP\({}_{\text{T}}\)** \\ \hline \multirow{4}{*}{Ey} & \(W_{\text{K}}\) & (t\({}_{\text{O}}\)) & (t\({}_{1}\)) & (t\({}_{\text{e}}\)) & E\({}_{\text{\%}}\) & E\({}_{\text{T}}\) \\  & HH (LiC) & 0.53 & 0.63 & 0.74 & 0.15 & 0.11 \\  & HS (LiC) & 0.64 & 0.72 & 0.89 & 0.19 & 0.13 \\  & BS (LiC) & 0.22 & 0.25 & 0.28 & 0.11 & 0.03 \\  & AS (LiC) & 0.3 & 0.4 & 0.40 & 0 & 0.05 \\ \hline \multirow{4}{*}{Cy} & Index & (t\({}_{\text{O}}\)) & (t\({}_{1}\)) & (t\({}_{\text{e}}\)) & C\% & CT \\  & CC (\%) & 0 & 0.4 & 0.6 & 0.33 & 0.30 \\  & ER (\%) & 0.6 & 0.1 & 0.1 & 0 & \(-\)0.2 \\  & LCV (\%) * & 1 & 0.6 & 0.4 & \(-\)0.5 & \(-\)0.3 \\ \hline \multirow{4}{*}{Sy} & Index & (t\({}_{\text{O}}\)) & (t\({}_{1}\)) & (t\({}_{\text{e}}\)) & S\% & S\({}_{\text{T}}\) \\  & C2C\({}_{\text{GS}}\) & 0.13 & 0.16 & 0.24 & 0.33 & 0.06 \\ \cline{1-1}  & LCC (\(\mathbf{\xi}\)) & 140 & 123.8 & 1200 & 0.90 & 530 \\ \cline{1-1}  & Eco-cost \(\mathbf{\xi}\) & 160 & 155 & 112.7 & \(-\)0.3 & \(-\)23.6 \\ \cline{1-1}  & Value (\(\mathbf{\xi}\)) * & 2000 & 1850 & 1600 & \(-\)0.1 & \(-\)200 \\ \cline{1-1}  & EVR* & 0.08 & 0.08 & 0.082 & \(-\)0.1 & \(-\)0.01 \\ \hline \hline \end{tabular}  
* An improvement in this index supposes a result with a negative value.  
\end{table} 
Table 6: Results of macro assessment—FEI. 1. The Q\({}_{\rm HH}\) category is mainly influenced by the quality of the materials used; in order to reduce the effects (impacts) on human health, action should first be taken on the materials. 2.