In "lavaan" Package a) What's the usage of function "modificationIndices"? What's the meaning of the outcome in the red box? > modificationindices (p1. fit, sort=T) 1hs op rhs mi epc sepc. lv sepc. all sepc . nox 33 F2 =~ RT 100.693 0. 160 0. 160 0. 160 0. 160 43 PS RE 69 . 015 0. 102 0 . 102 0. 201 0. 201 31 F2 =~ PS 43.204 -0.122 -0.122 -0. 122 -0. 122 36 F2 =~ RO 31.732 -0.057 -0. 057 -0. 057 -0. 057 68 HO RO 30. 842 -0.036 -0. 036 -0. 068 -0 . 068 60 RT ET 29. 191 0. 038 0. 038 0. 061 0 . 061 b) If the value of "fitMeasures(model,fit.measures = "TLI")" is very close to 0, what conclusion can we draw? c) When computing the incremental fit indices, we typically measure the relative improvement in fit by comparing the target model with the baseline model. Explain the meaning of the baseline model