give suggestion to install sql server

Question

in this list which one i have to install to support sql server database    please tell me my system is 32 bit windows 7 ultimate		149.9 MB
	Express 32BIT\SQLEXPR_x86_ENU.exe	Click here	168.4 MB
	Express 64BIT\SQLEXPR_x64_ENU.exe	Click here	196.7 MB
	ExpressAdv 32BIT\SQLEXPRADV_x86_ENU.exe	Click here	1.1 GB
	ExpressAdv 64BIT\SQLEXPRADV_x64_ENU.exe	Click here	1.1 GB
	ExpressAndTools 32BIT\SQLEXPRWT_x86_ENU.exe	Click here	840.8 MB
	ExpressAndTools 64BIT\SQLEXPRWT_x64_ENU.exe	Click here	833.2 MB
	LocalDB 32BIT\SqlLocalDB.msi	Click here	36.6 MB
	LocalDB 64BIT\SqlLocalDB.msi	Click here	43.1 MB
	MgmtStudio 32BIT\SQLManagementStudio_x86_ENU.exe	Click here	673.0 MB
	MgmtStudio 64BIT\SQLManagementStudio_x64_ENU.exe	Click here	683.9 MB