Observe the following extracts and choose the statement tha...

Observe the following extracts and choose the statement that reflects the realities of the underlined elements.
Edinburgh declaration calls on leaders to work far more closely with communities (subtitle) principal science adviser at NatureScot, (lines 9, 10)

i. we could replace “on” by “to” without losing the meaning

ii. we could replace “at” by “in” without losing the meaning

iii. “at” means he works or consults for this place