You can check to see whether an R object is NULL with the _________ function.(a) is.null()(b) is.nullobj()(c) null()(d) as.nullobj()I got this question in homework.The origin of the question is Functions topic in portion Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming

You can check to see whether an R object is NULL with the _________ fu

1.	You can check to see whether an R object is NULL with the _________ function.(a) is.null()(b) is.nullobj()(c) null()(d) as.nullobj()I got this question in homework.The origin of the question is Functions topic in portion Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming
Answer» RIGHT answer is (a) is.null() To elaborate: It is SOMETIMES useful to allow an argument to take the NULL VALUE, which might INDICATE that the function should take some SPECIFIC action.

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