Which is the lowest complexity"
a. (n) * 2n
b. (n2) * n
c. n2
d. nlog(n)
e. 3n

E. 3n

Explanation:

Of the options given, 3n represents the lowest complexity = O(3n). Since O(constant * n) is the same as O(n) this represents linear complexity.

All other given options represent a complexity higher than linear complexity.

This is because quadratic complexity and log-linear complexity are higher than linear.

answerhard disks;