Which of the following is NOT a concern when determining if a corporation is "doing business" in a state?

When assessing whether a corporation is "doing business" in a state, various factors are considered to determine the corporation's level of activity and presence in that jurisdiction. One such factor is the "presence of a physical office," which indicates a more established foothold in the state, making it a concern in this context. Similarly, the "volume of business transacted" is critical because a significant amount of business could suggest that the corporation has sufficient contacts with the state to be subject to its laws.

Hiring local employees also raises the concern of whether the corporation has engaged sufficiently with the local economy and workforce, leading it to be deemed as doing business in that state.

On the other hand, "renting hotel rooms for visits" refers to temporary stays and does not imply a permanent or ongoing business presence. This activity typically lacks the sustained, meaningful engagement with the local market that characterizes the other factors. Therefore, it is the least connected to the concept of a corporation truly "doing business" in the state, which is why it is not a primary concern in these assessments.