can + have / has?

[Schwartz]

A large company can ____ more flexibility in its employment policies than a small firm.

'have' or 'has' which one would fit the sentence? and why?

[Milanya]

have

Modal verbs are special verbs which behave very differently from normal verbs. Here are some important differences:
1. Modal verbs do not take "-s" in the third person.

Examples:

He can speak Chinese.

Common Modal Verbs
Can
Could
May
Might
Must
Ought to
Shall
Should
Will
Would
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con·text - The part of a text or statement that surrounds a particular word or passage and determines its meaning.

[Schwartz]

Thank you again Ms.Milanya.
You always here on the forum, and you've answered many questions from me.
Thanks a lot for helping me improve english.