It should be a herb because herb does not start with a vowel, which eliminates the need for the word an.
4. Males were less likely than females to take part in running.
5. A greater proportion of women then men participated in badminton.
6. The table compares data about male and female involvement in a range of sports in New Zealand last year.
If you have already had a research questing identifies, you should: B, turn it into an assertion.