English

An optimist is someone who tends to see the positive side of situations, which matches the description of looking on the bright side of things. The other options do not fit this meaning.

The correct preposition to use with 'angry' when referring to a person is 'with'. Therefore, 'She’s angry with you.' is correct.

The term 'brittle' describes something that is easily broken or cracked under stress. 'Resilient' means able to recover quickly, and 'flexible' means able to bend without breaking, so 'brittle' is the correct choice.

The term 'regicide' specifically refers to the act of killing a king. Other options refer to different types of killing: 'suicide' is killing oneself, 'patricide' is killing one's father, and 'parricide' is killing a close relative or parent.

The sentence refers to a specific action completed in the past ('yesterday'), so the simple past tense 'saw' is correct. 'Have seen' is present perfect and does not fit with a definite past time expression. 'Had seen' is past perfect, which is not appropriate here, and 'seen' alone is not a correct verb form without an auxiliary.

A 'tyrant' is a cruel and oppressive ruler, and a 'persecutor' is someone who oppresses or harasses others, making 'Persecuter' the closest synonym among the options. The other options do not relate to the meaning of 'tyrant'.

Matricide is the act of killing one's mother. Parricide refers to killing a close relative, regicide is killing a king, and patricide is killing one's father, so the correct term for killing one's mother is matricide.

A person who is recovering after an illness or medical treatment is called a 'Convalescent'. The other options do not describe recovery; 'Regressing' means getting worse, 'Faltering' means hesitating or weakening, and 'Failing' means not succeeding.

Claustrophobia is the fear of closed or confined spaces, making option A the correct answer. The other options do not relate to this fear.

The correct phrase is "there is a limit to everything in life." The preposition "to" is standard and most commonly used in this expression to indicate a boundary or maximum extent. While "limit on" can be used in contexts emphasizing an imposed restriction, "limit to" is the natural and idiomatic choice in this phrase. The options "in" and "with" are incorrect in this context.