4. The challenged provisions do not violate any other fundamental rights. From a constitutional perspective, the only decisive factor is that the minimum level of subsistence in accordance with Art. 1 sec. 1 in conjunction with Art. 20 sec. 1 GG is sufficiently covered for everyone in need of assistance; therefore, there is no need to resort to other fundamental rights (cf. BVerfGE 125, 175 <227>). In particular, there are clearly objective reasons justifying the inequality of treatment arising from the differing assessment of the standard needs of one-person and family households (see C II 2 e aa above). 140 D. I. 1. The standard needs that guarantee a dignified minimum existence can always be determined only approximately. Such determination must be based on data about complex living conditions, and such data provides only limited information as to what is required to secure minimum existence. According to the required overall assessment, the benefits to secure a dignified minimum existence must be based on assumptions, data and calculation that stand up to scrutiny; however, objections regarding individual items in the calculations have no direct effect upon their evaluation in a constitutional review. This does not mean, however, that the legislature may simply ignore serious objections pointing to actual risks of underfunding and continue to update on the same basis; rather, when carrying out the periodic reassessment of standard needs, it is required to deal with objections that have arisen in the meantime and correct any inadequate steps in the calculations. 141 2. On this basis, there are no objections to the challenged provisions. The arrangements for the level of benefits to cover standard needs, including their updating […], are consistent with Art. 1 sec. 1 GG in conjunction with the principle of the social welfare state in Art. 20 sec. 1 GG. 142 II. 1. Should significant doubt exist as to existential needs actually being covered, the legislature, when reassessing standard needs on the basis of the 2013 income and consumption survey the evaluation of which has not yet been completed, must however ensure that the level of the lump sum benefit to cover standard needs is assessed in a way that bears scrutiny. It is within its leeway to undertake suitable subsequent collections of data if necessary, to raise benefits on the basis of an index of its own, or to prevent underfunding by other means. 143 a) Should a clear and significant discrepancy become apparent between the actual development of prices and the development of prices of goods relevant to cover standard needs, which is taken into account for updating standard need levels, the legislature must react promptly. This reaction must also take account of the development of prices for household electricity (see C II 2 e bb above). If sudden and extreme price 144 27/29