Verified Answer :

I believe its "A", an indoor company

Answer:

C a company picnic for employess

Explanation:

Internal events refer to activities that are organized only for the employees of a company. According to this, from the options given an internal event would be a company picnic for employees.

The other options are not right because an indoor company, a store sale and a listed time coupon are not employees only events as they also include customers.