Directions: Each of the following question is in the form of a sentence with four underlined portions marked a, b, c and d, respectively. Choose the marked portion that carries errors. If no error required then your answer is 5.

1. A tapestry consists of a foundation weave,
                        a
called the wrap, which across are passed
                                                b
several colored threads, called wefts,
                            c
forming decorative patterns.
                                   d

2. The fossil remains of much extinct
                                                a
mammals have been found in the tar pits
b                                            c
or Rancho Brea in Los Angles.
                              d

3. Chemical engineering is based on the
                                                            a
principles of physics, chemists, and
    b                                         c
mathematics.
d

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