$96.$ The main advantage of line organisation is itseffective command and controldefined responsibilities at all levelsrigid discipline in the organisationability of quick decision at all levelsall of the above$\mathrm{.}97.$ The main disadvantage of line organisation istop level executives have to do excessive workstructure is rigidcommunication delays occurall of the abovenone of the above$\mathrm{.}98.$ The mathematical technique for finding the best use of limited resources in an optimum manner is known asoperation researchlinear programmingnetwork analysisqueuing theorybreak$-$even analysis$\mathrm{.}99.$ The most popular type of organisation used for Civil Engineering Constructions isline organisationline and staff organisationfunctional organisationeffective organisationnone of the above$\mathrm{.}100.$ The objective of time study is to determine the time required to complete a job byfast workeraverage workerslow workernew entrantany one of the above.