Which of the following code extracts 1st element of the 2nd element?

> x <- list(a = list(10, 12, 14), b = c(3.14, 2.81))

Which data structure in R is used to store an ordered collection of elements?

A. List

B. Matrix

C. Data Frame

D. Vector

What does the matrix() function create in R?

A. A list of elements

B. A one-dimensional array

C. A two-dimensional array

D. A data frame

In R, how do you create a list named my_list with three elements: 1, "hello", and TRUE?

A. my_list <- c(1, "hello", TRUE)

B. my_list = list(1, "hello", TRUE)

C. my_list(1, "hello", TRUE)

D. list(my_list = c(1, "hello", TRUE))

What is the primary data structure used for storing tabular data in R?

A. List

B. Matrix

C. Data Frame

D. Array