<em>The answer is wireless cellular phones.
</em>
<em>
</em>
<em>Companies use of wireless cellular phones may vary and majority are considered it as optional. Instead of talking via wireless cellular phones, emails and telephone lines conversation are much advisable for cost-effective and formal type of communication process.</em>
Answer:
<em>D. to regulate, to warn, to guide.</em>
B. it can save time by allowing you to quickly fill cells
Answer:
Upgrading IT is considered as B. Support activity
Explanation:
It is considered as support activities because they help the primary activities move smoothly and consistently.
For example, efficient communication between a particular firm and its subsidiaries will be extremely difficult without the necessary IT infrastructure, which will slow down the primary activities that are to be carried out.
