3 She has attracted a few/several/a lot of attention with her new look.

A lot of is the correct answer. Explanation: "Attention" is an uncountable noun. While "several" and "a few" can be used to imply a smaller number of things, the context usually describes attention using "a lot of" or "much". Since "attention" is uncountable, "a lot of" is the best fit. Answer: a lot of