The active sentence is
→ D. Few people think seriously of doing something about accidents
This sentence uses simple present tense
✐ formula present simple
(+) S + Verb 1 + O/C
(-) S + do/does+ not + Verb 1 + O/C
(?) Do/does + S + Verb 1 + O/C?
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Subject : English
Keywords : Active Voice, Present simple
Also read the similar question
brainly.com/question/9909961
Egomania is basically intolerably self-centred. In a more technical sense, it's an obsession -- an obsessive preoccupation with one's own self, usually in the form of following own impulses and have delusions of grandeur.
Megalomania is a rather loose term, and usually means have delusional fantasies of omnipotence (having unlimited or very great power, whatever 'power' might mean to that person). Interestingly, megalomania was the standard term for narcissistic personality disorder before the 1960s (so far as I recall from my psychology degree over 30 years ago).