Select the most appropriate option to substitute the bracketed segment in the given sentence. If there is no need to substitute it, select 'no substitution required'.
Besides the atmospheric changes that make us sweat, (hormonal or emotional stimulus can also cause sweating).
1
hormonal and emotional stimuli also causes sweating
2
hormonal or emotional stimuli can also cause sweating
3
No substitution required
4
hormonal or emotional stimulus also causing sweating