Error Spotting (Grammar) — choose the part that contains a grammatical error. If the sentence is correct, choose ‘‘No error.’’ Complete sentence: Neither of the plans suits him and therefore he decided not to go out yesterday.

Introduction / Context:
This item checks tense consistency within one sentence. When a past result is introduced with ‘‘therefore,’’ the cause is normally framed in the same past-time context.

Given Data / Assumptions:

• Main action: ‘‘he decided not to go out yesterday’’ (simple past with a clear past-time marker).
• Causal clause before it: ‘‘suits him and therefore …’’ is in present tense.
• We seek the grammatically most appropriate and consistent tense choice.

Concept / Approach:
Maintain the same time frame for cause and effect describing a specific past incident. Use ‘‘suited’’ (simple past) rather than ‘‘suits’’ (simple present).\n

Step-by-Step Solution:
Identify the time anchor: ‘‘yesterday’’ sets a past reference.Find the mismatch: present ‘‘suits’’ vs past ‘‘decided.’’Correct the verb in the causal clause to the past: ‘‘neither of the plans suited him …’’Revised sentence: ‘‘Neither of the plans suited him and therefore he decided not to go out yesterday.’’\n

Verification / Alternative check:
Read the sentence entirely in past time. The narrative now flows logically: cause (suited/not suited) and effect (decided) both in the past.

Why Other Options Are Wrong:

• ‘‘Neither of the plans’’ — correct subject; ‘‘neither’’ is singular.
• ‘‘he decided not to’’ — correct past-tense main clause beginning.
• ‘‘go out yesterday.’’ — idiomatic past-time adverbial.
• ‘‘No error’’ — incorrect because a tense mismatch exists in part B.

Common Pitfalls:
Mixing present and past in a single, time-specific event; forgetting ‘‘neither’’ takes a singular verb (which remains true after correction: ‘‘suited’’ matches singular subject).

Final Answer:
suits him and therefore