Answer:
d. service
Step-by-step explanation:
A tangible product or resource refers to something which can be touched, since the organization offers advice and tip which cannot be touched as is not an instrument, but it is a service, through which other women taking service gets benefit.
Synergy refers to the additional benefit from joining two or more resources,
as for example: the return of business A = $100 and that of business B = $150
And if both businesses are combined the return is $100 + $150 + $50 = $300
This is because $50 is synergy effect.
Therefore, the correct option is d. Service.